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Until 1949, bastnäsite was a rare and obscure mineral, not even remotely contemplated as a potential commercial source for lanthanides.
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Until and 1949
Until around 1949, Eccles believed that synaptic transmission was primarily electrical rather than chemical.
Until late 1949, Inklings readings and discussions usually occurred during Thursday evenings in C. S. Lewis's college rooms at Magdalen College.
Until 1949, changes to the British North America Acts could be made only by the British parliament.
Until the discovery of the second moon Nereid in 1949, Triton was commonly known as simply " the satellite of Neptune ".
Until 1949 it was a part of the Netherlands Indies.
Until the founding of the Federal Republic of Germany in 1949, Speyer was in the French occupation zone and once again became a garrison town of the French.
Until the communists came to power in China in 1949, villagers followed these traditional principles and tried to use the natural resources conservatively, with thought for the preservation the natural resources for future generations.
Until 1949, it was an Arab village situated upon ancient ruins.
Until 1949, each state elected the constitutional minimum of six Senators.
Until 1949 the village was served by a parish pump near to the entrance to the present playing field, although many houses had their own wells.
Until 1949 there were several names used for this ethnic group ; they received names as Qiao during the Yuan dynasty and Qiu and Qu during the Qing dynasty.
Until the end of the Chinese Civil War in 1949 Yan's arsenal in Taiyuan was the only factory in China sufficiently advanced to produce field artillery.
Until 1949, the part in southern Florida, from Naples to Miami, was US 94, which presently has the hidden designation of State Road 90 ( SR 90 ) in addition to its signed number.
Until 1949, no guidelines existed on how foreign investment was to be handled due to the restrictive nature of China toward foreign investors.
Until 1949 Jiujiang had very little industry except for local handicrafts.
Until 1949, the Astoria and Flushing Lines hosted both IRT and BMT service.
Until 1949 the series was not recorded and thus none of the pre-1949 programmes exist anymore.
Until 1949, the office was vested in the papacy.
Until 1949, a confession had been a solid evidence under the law, even if the police tortured a person to extract a confession.
Until his death in 1949, Jack White was General Manager and Owner of the factory which under his stewardship established itself as one of the most technically skilled and innovative factories in the region.
Until 1948, the team guernsey was gold with a black V, in 1949 the club adopted the now familiar black with gold sash design.
* The Sydney Morning Herald ( 1 October 1949 ) " Tree Marks A Tragedy And Solves A Mystery: Until this tree was discovered no evidence of the route taken by Edmund Kennedy on his expedition of 1848 had ever been found "
Until the summer of 1949, he organized from Kronberg the transport of about 950 goods wagons full of Papal aid supplies to Germany.
Until either 1945 or 1949, " Arkansas " was the only official song in Arkansas.
Until and was
`` Until this Hungarian Committee matter came up, Bang-Jensen was a fine and devoted individual.
Until the last year or so the profession of friendship with the United States had been an article of faith with Trujillo, and altogether too often this profession was accepted here as evidence of his good character.
Until I was transferred into the Seventh Ulanys I was like every other Pole in my feeling about Jews.
Until 1958 the state was also entitled to a special type of manufacturers' discount through the dealers.
Until the Charter of Liberties was issued in the fall of 1958, there were no guarantees of the right to assemble or to organize for political purposes.
Until a few weeks ago, however, Arnold Palmer was some god-like creature who had nothing in common with the duffers.
Until the 20th century, the term asphaltum was also used.
Until the 17th century, art referred to any skill or mastery and was not differentiated from crafts or sciences, but in modern usage the fine arts, where aesthetic considerations are paramount, are distinguished from acquired skills in general, and the decorative or applied arts.
Until the late 19th century, the axiom of choice was often used implicitly, although it had not yet been formally stated.
Until he was four years old, van Vogt and his family spoke only a dialect of Low German in the home.
Until these experiments, atomic number was not known to be a physical and experimental quantity.
Until independence, Armenia's economy was based largely on industry — chemicals, electronic products, machinery, processed food, synthetic rubber and textiles ; it was highly dependent on outside resources.
Until modern times there was no clear distinction between the architect and engineer.
Until the dissolution of Holy Roman Empire and mediatization of smaller imperial fiefs by Napoleon, the evangelical Abbess of Quedlinburg was also per officio the head of that reichsunmittelbar state.
Until 1800, Abensberg was a municipality belonging to the Straubing district of the Electorate of Bavaria.
Until 1953, it was known as the New York Curb Exchange.
Until Fath Ali Shah's death in 1834, the Imam Hasan Ali Shah enjoyed a quiet life and was held in high esteem at the Qajar court.
Until then, the song was sung in Australia as a patriotic song.
Until 1939 iron ore was mined on the Braunenberg hill.
Until the late 19th century the only available propellant was black powder.
" Until this time IP address registration in the ARIN region was done by a department within the Network Solutions corporation, which provided the initial staff and computer infrastructure for ARIN.
Until the 1970s there was considerable debate within psychiatry on the most appropriate term to use to describe the new drugs.
Until the establishment of the prison, the area was entirely dependent on agriculture, and, after the close of the prison, the town continued economically dependent on agriculture.
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