When oil prices spiked during the 1967 Oil Embargo, 1973 oil crisis, and 1979 energy crisis, Alberta's economy boomed.

* 1973 – A British Vanguard turboprop crashes during a snowstorm at Basel, Switzerland killing 104.

The effort was sufficiently complete that during the summer of 1973 the Unix kernel for the PDP-11 was rewritten in C. During the 1972 – 73 period there was a need to port to Honeywell 635 and IBM 360 / 370 machines, so Mike Lesk wrote the " portable I / O package " which would become the C " standard I / O " routines.

If the air mass is colder than the ground below it, it is labeled k. If the air mass is warmer than the ground below it, it is labeled w. While air mass identification was originally used in weather forecasting during the 1950s, climatologists began to establish synoptic climatologies based on this idea in 1973.

The French Army used existing mounted squadrons of Spahis to a limited extent for patrol work during the Algerian War ( 1954 – 62 ) and the Swiss Army maintained a mounted dragoon regiment for combat purposes until 1973.

Censuses during the independence were taken 1963, 1973, 1991 and 2006.

His command positions included: commanding officer of a platoon and two rifle companies during two tours of duty in Vietnam ; commanding officer of Special Training Branch and Recruit Series at Marine Corps Recruit Depot San Diego, California ( 1966 – 1968 ); commanding officer of Counter-Guerilla Warfare School, Northern Training Area on Okinawa ( 1970 ), Company officer at the United States Naval Academy ( 1970 – 1973 ); commanding officer of the Marine Barracks at Naval Air Station North Island, California ( 1973 – 1976 ), and commanding officer, 3rd Battalion 3rd Marines ( 1983 – 1985 ).

This time, IBM submitted a candidate which was deemed acceptable — a cipher developed during the period 1973 – 1974 based on an earlier algorithm, Horst Feistel's Lucifer cipher.

Top-twenty singles during this period included " The Right Combination ", " Burning the Midnight Oil " ( both duets with Porter Wagoner, 1971 ), " Lost Forever in Your Kiss " ( with Wagoner ), " Touch Your Woman ( 1972 ), " If Teardrops Were Pennies " ( with Wagoner ), " My Tennessee Mountain Home " and " Travelin ' Man " ( 1973 ).

Although many naturalists have studied aspects of animal behaviour throughout history, the modern discipline of ethology is generally considered to have begun during the 1930s with the work of Dutch biologist Nikolaas Tinbergen and Austrian biologists Konrad Lorenz and Karl von Frisch, joint winners of the 1973 Nobel Prize in Physiology or Medicine.

Lulu Roman was twice charged with drug possession in 1971, and David " Stringbean " Akeman and his wife were murdered in November 1973 during a robbery at their home.

In 1973 – 1974 Hellas finished the season in 4th last place thus avoiding relegation, but were sent down to Serie B during the summer months as a result of a scandal involving team president Saverio Garonzi.

Many funds ceased trading during the Recession of 1969 – 70 and the 1973 – 1974 stock market crash due to heavy losses.

The first incident occurred on 21 February 1973, during a period of tension led to the Arab-Israeli Yom Kippur War in October that year, when Libyan Arab Airlines Flight 114 was shot down by Israeli F-4 jets over the Sinai Peninsula.

A windstorm during construction in 1973 caused many of the glass panels to crack and break.

Keynesian economics advocates a mixed economy — predominantly private sector, but with a significant role of government and public sector – and served as the economic model during the later part of the Great Depression, World War II, and the post-war economic expansion ( 1945 – 1973 ), though it lost some influence following the tax surcharge in 1968 and the stagflation of the 1970s.

It also severed ties with Israel during the Yom Kippur War in 1973, but kept supporting the U. S. on the Vietnam War.

The recording had taken place during three concert nights at Madison Square Garden in July 1973, during the band's concert tour of North America.

MIT ultimately divested itself from the Instrumentation Laboratory and moved all classified research off-campus to the Lincoln Laboratory facility in 1973 in response to the protests, and the student body, faculty, and administration remained comparatively unpolarized during what was a tumultuous time for many other universities.

In 1973, the party ran for the Knesset ( Israeli parliament ) during the general elections under the name " The League List ".

Having achieved spectacular successes in the offensive with tank-heavy formations during the Six Day War, the Israeli Defense Force found in the Yom Kippur War of 1973 that a doctrine that relied primarily on tanks and aircraft had proven inadequate.

Right-wingers and Montoneros clashed at Perón's homecoming ceremony during the 20 June 1973 Ezeiza massacre, leaving 13 dead and more than 300 wounded.

More recent uses include: by France during the First Indochina War ( 1946 – 1954 ), the Algerian War ( 1954 – 1962 ), the Portuguese Colonial War ( 1961 – 1974 ) and the Western Sahara War ( 1975 – 1991 ), The Six-Day War by Israel ( 1967 ), in Nigeria ( 1969 ), India and Pakistan ( 1965 and 1971 ), Turkey during the invasion of Cyprus ( 1974 ), by Morocco during the Western Sahara War ( 1975 – 1991 ), Iran ( 1980 – 88 ), Brazil ( 1972 ), Egypt ( 1973 ), Iraq ( 1980 – 88, 1991, 2003 – 2011 ), Angola ( 1993 ), Yugoslavia ( 1991-1996 ), and by Argentina ( 1982 ).

* 1973 – Over the Sinai Desert, Israeli fighter aircraft shoot down Libyan Arab Airlines Flight 114 jet killing 108.

Iraq participated in the Arab-Israeli wars of 1948, 1967 and 1973, and traditionally has opposed all attempts to reach a peaceful settlement between Israel and the Arab States.

* 2011 – Libyan civil war: The United Nations Security Council adopts United Nations Security Council Resolution 1973, authorizing a military intervention by member states to protect civilians in the Libyan Arab Jamahiriya.

" After 1961, Egypt continued to give lip service to the idea of Arab unity by continuing to call itself " the UAR " but changed its name to " Arab Republic of Egypt " in 1973.

The major exception to this occurred during the 1973 oil crisis when Saudi Arabia, with the other Arab oil states, used an embargo on oil supplies to pressurize the US to stop supporting Israel.

As a result of the 1973 Arab Oil Embargo, interest in ridesharing picked up and the states began experimenting with HOV lanes.

Mauritania ' declared war ' on Israel as a result of the 1967 Six-Day War, following the Arab League's collective decision ( Mauritania was not admitted to the League until November 1973 ), and did not reverse that declaration until at least 1991 and, seemingly, for some 32 years in about early-mid 1999.

Arab members of OPEC alarmed the developed world when they used the “ oil weapon ” during the Yom Kippur War by implementing oil embargoes and initiating the 1973 oil crisis.

The 1973 oil embargo happened in October following the United States ' and Western Europe's support of Israel against Arab nations in the Yom Kippur War of 1973.

Israel Tal, who was serving as a brigade commander after the Suez Crisis, restarted plans to produce an Israeli-made tank, drawing on lessons from the 1973 Yom Kippur War, in which Israeli forces were outnumbered by those of the Middle East's Arab nations.

The Ambassador was redesigned and stretched to became the biggest ever — just as the 1973 Arab Oil Embargo sparked gasoline rationing across the nation.

With the advent of the Arab Oil Embargo energy crisis of 1973, General Motors aborted the Wankel rotary engine around which the Pacer had been designed, as its fuel consumption exceeded that of conventional engines with similar power.

On October 17, 1973, the Organization of Arab Petroleum Exporting Countries announced an oil embargo against the United States in retaliation for its support of Israel during the Yom Kippur War.

This policy proved highly successful, and with massive increase in the price of oil in the aftermath of the 1973 Arab – Israeli War.

However, in contrast to his hero status following the Yom Kippur War of 1973, Sadat became unpopular across the Arab World.

* 1973 – 1974-The United States is affected by the Arab Oil Embargo ; gasoline prices skyrocket as supplies of gasoline and heating oil are in short supply.

At the time, the UK was in the grip of a recession, as a result of the early 1970s energy crisis caused by the Organization of Petroleum Exporting Countries ' oil boycott of the West in the aftermath of the 1973 Arab – Israeli War.

The 1973 oil crisis started in October 1973, when the members of Organization of Arab Petroleum Exporting Countries or the OAPEC ( consisting of the Arab members of OPEC, plus Egypt, Syria and Tunisia ) proclaimed an oil embargo.

** 1973 oil crisis-caused by an OPEC oil export embargo by many of the major Arab oil-producing states, in response to Western support of Israel during the Yom Kippur War