Since the late 1930s alloy steels have been used for frame and fork tubes in higher quality machines.

Since the early 1930s, the company has promoted spin-off reference works.

Since the 1930s, prices and wages had been controlled, but money had been plentiful.

Since the 1930s, the Estrada Doctrine has served as a crucial complement to these principles.

Since the 1930s, all nations have closely monitored the inflow and outflow of capital, and most economists agree that a favorable balance of trade is desirable.

Since the 1930s, Paraguayans have regarded Solano López as the nation's foremost hero.

Since the late 1930s, SF fans have organized conventions, non-profit gatherings where the fans ( some of whom are also professionals in the field ) meet to discuss SF and generally enjoy themselves.

Since the production of high-quality semiconductor materials was still decades away, Lilienfeld's solid-state amplifier ideas would not have found practical use in the 1920s and 1930s, even if such a device were built.

Since the early 1930s, the Polish government introduced a set of policies designed to Polonize all minorities ( Belarusians, Ukrainians, Jews, etc .).

Since the 1930s, many rural workers have moved to the big cities.

Since the late 1930s the monoplane has been the most common form of plane.

Since the 1930s the Hill Cumorah Pageant is held annually at the hill by The Church of Jesus Christ of Latter-day Saints and regularly attracts thousands to its performances.

Since the 1930s, however, coups d ' état have disrupted this democracy.

Since achieving stability in the early 1930s, the NFL had never fielded more than 10 teams.

Since the late 1930s it has been the most common form for a fixed wing aircraft.

Since the 1930s, the city of John Day has served as the main economic center of the county, and boasts the largest population.

Since its crystallization in the 1930s, computation has been primarily approached from two traditions: engineering, which seeks to build practical systems using computations ; and mathematics, which seeks to prove theorems about computation ( albeit already in the 1970s computing as a discipline was described as being at the intersection of mathematical, engineering, and empirical / scientific traditions ).

Since the 1930s, the population of the community has gradually declined.

Since then, the Old Regent has been painstakingly rebuilt and restored once again, including recreating historic panels in the auditorium and the original 1930s carpeting.

Since it was also miles away from the Plandome Road School, the Manhasset school district built a conveniently located Munsey Park Elementary School in the 1930s.

Since the 1930s, Calabash has been known for its distinctive style of fried seafood, which has come to be known as " Calabash Style.

Since then, the City of Etowah has ridden the waves of economic downturns and successes, such as the closing of the L & N shops in the 1930s and the recruitment of new industries, to evolve into the city that it is today.

Since the 1930s, the Baak Doi label heaquartered in Shanghai had been published under the EMI banner and since then, EMI had also been the dominant label in the cantopop market in Hong Kong until the genre's decline in the mid 1980s.

Since the 1930s, construction kits compatible with Meccano were manufactured in the Soviet Union.

Since 1809, the Grand Duchy had benefited from a customs organization, an independent domestic state budget, its own currency ( Finnish markka, since 1860 ) and the industrial progress during 1860 – 1916.

Since the late 1970s, towns in the north began industrial production through maquiladoras, especially in San Pedro Sula and Puerto Cortés.

Since independence in 1968, Mauritius has developed from a low-income, agriculturally based economy to a middle-income diversified economy with growing industrial, financial, and tourist sectors.

Since the mid-20th Century, advances in rubber, plastics, synthetic cloth, and industrial adhesives have allowed manufacturers to create shoes that stray considerably from traditional crafting techniques.

Since then the service sector has been growing faster than the agrarian and industrial sectors.

Since then many other marine cultures, both subsistence and industrial, have exploited Procellariiformes, in some cases almost to extinction.

Since its founding, the college expanded its degree program to include chemical engineering, civil engineering, electrical engineering, industrial engineering, and mechanical engineering.

Since the early 1980s, however, desalination plants, which render seawater suitable for domestic and industrial use, have provided about 60 % of daily water consumption needs.

Since 1950 Tychy has grown rapidly, mainly as a result of post-war Communist planning policies enacted to disperse the population of industrial Upper Silesia.

Since agriculture was relatively more productive, relative price indexes for industrial goods were higher than those of agricultural products.

Since the 1920s, the appearance of the " modern girl " ( moga ) and " modern boy " ( mobo ) saw an increase in the number of women taking on the role of industrial and white-collar workers and consumers.

Since the 19th century, these districts have grown together into a large complex with a vast industrial landscape, inhabited by some 7. 3 million people ( including Düsseldorf and Wuppertal ).

Since the 1970s, the county has attempted to develop three industrial parks with little success.

Since then, Matrox has continued to shift the focus of its card designs towards specialized, niche markets, moving more deeply into enterprise, industrial, and government applications.

Since 2004, the city has experienced revitalization in many segments of the economy, including commercial, residential and industrial activity.

Since then, Blytheville has developed a growing industrial base, much of which is centered around the steel industry.

Since then, the boundaries of Lake Park have expanded to of residential, business, industrial and mixed-use land.

Since the late 19th century, Muncie ’ s economic backbone had been in the industrial sector, primarily in manufacturing.

Since the post-war era, the city, like most other industrial inner-ring suburbs, has fallen into economic decline.

Since the 1980s the Hudson waterfront, which had been part of the Weehawken Terminal has been redeveloped from industrial to residential and recreational uses, including the Hudson River Waterfront Walkway.

Since the 1960s, Ontario has been a location of choice for residential development, due in part to its civic administration, its school system, and significant commercial and industrial development.

Since 1974, Braddock resident Tony Buba has made many films centering on Braddock and its industrial decline, including Struggles in Steel.

Since its incorporation, Sharpsburg became an industrial town, manufacturing iron, brick and glass while goods were transported through the canal that bisected the borough, along with the Allegheny River.

Since the primary interest in plantations is to produce wood or pulp, the types of trees found in plantations are those that are best-suited to industrial applications.