That remained the state of affairs until the late 1960s when Harald Loe ( at the time a professor at the Royal Dental College in Aarhus, Denmark ) demonstrated that a chlorhexidine compound could prevent the build-up of dental plaque.

Farming of abalone began in the late 1950s and early 1960s in Japan and China.

Collins decided to record it in the late 1960s amid an atmosphere of counterculture introspection ; she was part of an encounter group that ended a contentious meeting by singing " Amazing Grace " as it was the only song to which all the members knew the words.

The last of the Ainu households disappeared in the late 1960s, when Yamanaka Kitaro committed suicide after the death of his wife.

His attitude towards conjectures was that one should not dignify a guess as a conjecture lightly, and in the Taniyama case, the evidence was only there after extensive computational work carried out from the late 1960s.

By the late 1960s he had started to become interested in scientific areas outside of mathematics.

From the late 1940s to the early 1960s, following the creation of the state of Israel, most of these Jews fled their countries of birth and are now mostly concentrated in Israel.

One story is that The Rolling Stones went to stay at Korner's house late one night, in the early 1960s, after a performance.

Although he himself was a blues purist, Korner criticised better-known British blues musicians during the blues boom of the late 1960s for their blind adherence to Chicago blues, as if the music came in no other form.

This practice was particularly popular in the late 1960s.

However, the late 1950s and early 1960s saw the onset of a lasting transformation of the city by the tourist industry.

The local economy is based upon tourism directed to the beaches of the Costa Blanca and particularly the second residence construction boom which started in the 1960s and reinvigorated again by the late 1990s.

From the late 1820s until the mid 1960s, Arapawa Island was a base for whaling in the Sounds.

The region was a major producer of raw opium ( hence the name Afyon ) until the late 1960s when under international pressure, from the USA in particular, the fields were burnt and production ceased.

Remains of the walls of this fort were discovered west of the castle when excavating the foundations for a new post office and telephone exchange building in the late 1960s.

By the late 1960s, the area of LAFTA had a population of 220 million and produced about $ 90 billion of goods and services annually.

Throughout the late 1950s and into the 1960s, the United States and the Soviet Union had been developing a series of missile systems with the ability to shoot down incoming ICBM warheads.

* About 50 people in Vernon, Florida collected insurance claims for loss-of-limb accidents in the late 1950s and early 1960s ; this was more than two-thirds of all such claims in the United States during that time.

He changed his surname from Einstein ( to avoid confusion with the famous physicist ) and began a comedy career that quickly made him a regular on variety and talk shows during the late 1960s and early 1970s.

A standardized form of the Basque language, called Euskara Batua, was developed by the Basque Language Academy in the late 1960s.

In the late 1960s and early 1970s, Thackeray built the party by forming temporary alliances with nearly all of Maharashtra's political parties.

However, in the late 1950s and early 1960s, base-stealing was brought back to prominence primarily by Luis Aparicio and Maury Wills, who broke Cobb's modern single-season record by stealing 104 bases in 1962.

During the late 1960s, the Baseball Players Union became much stronger and conflicts between owners and the players ' union led to major work stoppages in 1972, 1981, and 1994.

The BASIC language was also central to the HP Time-Shared BASIC system in the late 1960s and early 1970s, and the Pick operating system.

Following a brief modeling career in the late 1960s, Berenson became a freelance photographer.

Notably, in the recession of late 2008, a record number of retailers were holding early promotions due to a weak economy.

Nevertheless, since the late 1980s and the beginning of economic transition, Croatian economy experienced difficulties due to deindustrialization, war destruction and the loss of Yugoslav and Comecon markets.

When the Soviet Union broke up in late 1991, a major boost to Cuba's economy was lost, leaving it essentially paralyzed because of the economy's narrow basis, focused on just a few products with just a few buyers.

" Some believe that the newly globalised economy of the late 20th and early 21st century has facilitated this process through the use of new information technology.

Some supported extending the NEP, as Lenin had suggested late in his life, or ending it and replacing it with a planned economy, a position Lenin held when he initiated NEP.

During the late 19th and early 20th centuries, just the opposite was the case with little to no population concentration in major industrial centres as the predominantly rural resource-dependent Maritime economy continued on the same path as it had since European settlement on the region's shores.

Although perestroika was considered bold in the context of Soviet history, Gorbachev's attempts at economic reform were not radical enough to restart the country's chronically sluggish economy in the late 1980s.

In late 1989 and early 1990, Mobutu was weakened by a series of domestic protests, by heightened international criticism of his regime's human rights practices, by a faltering economy, and by government corruption, most notably his massive embezzlement of government funds for personal use.

Until the 1930s, the Finnish economy was predominantly agrarian, and, as late as in the 1950s, more than half the population and 40 percent of output were still in the primary sector.

The prolonged worldwide boom, beginning in the late 1940s and lasting until the first oil crisis in 1973, was a challenge that Finland met and from which it emerged with a highly sophisticated and diversified economy, including a new occupational structure.

In the late 1930s, Italy enacted manufacturing cartels, tariff barriers, currency restrictions, and massive regulation of the economy to attempt to balance payments.

Hayek was defended by Professor Antony Flew who stated that the German Social Democrats, unlike the British Labour Party, had, since the late 1950s, abandoned public ownership of the means of production, distribution and exchange and had instead embraced the social market economy.

Mining, the mainstay of the Honduran economy in the late 19th century, declined dramatically in importance in the 20th century.

In the late 1990s, Malaysia was shaken by the Asian financial crisis, which damaged Malaysia's assembly line based economy.

A range of economic reforms were introduced in the late 1980s including a managed devaluation of the rupiah to improve export competitiveness, and de-regulation of the financial sector, Foreign investment flowed into Indonesia, particularly into the rapidly developing export-oriented manufacturing sector, and from 1989 to 1997, the Indonesian economy grew by an average of over 7 %.

By the late Eighties, Japan had moved from being a low-wage to a high-wage economy.

By late 2005, the economy finally began what seems to be a sustained recovery.

The outlawing of the Communist Party of Kazakhstan ( CPK ), which followed the attempted coup, also permitted Nazarbayev to take virtually complete control of the republic's economy, more than 90 % of which had been under the partial or complete direction of the central Soviet government until late 1991.

Marx predicted the eventual fall of capitalism, to be replaced by socialism, yet since the late 20th century state socialism is in retreat, as the Soviet Union collapsed, and the People's Republic of China shifted towards a market economy.

After contracting substantially between 1991 – 93, the economy steadied in late 1994, led by recovery in light industry and a boom in commerce and finance.

From 1997 to 2004, Michigan was listed as the only state to top the 10, 000 mark for the number of major new developments ; however, the effects of the late 2000s recession have slowed the state's economy.

Throughout the late 1980s and early 1990s, American politicians and business leaders accused MIT and other universities of contributing to a declining economy by transferring taxpayer-funded research and technology to international – especially Japanese — firms that were competing with struggling American businesses.

Due to a series of ill fortuned policy decisions concerning military expenditures and mining industries and the radical changes in international oil prices by the late 1970s, the North Korean economy began to slow down.

Declining phosphate prices, the high cost of maintaining an international airline, and the government's financial mismanagement combined to make the economy collapse in the late 1990s.