Word: problem
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Dates: during 1930-1939
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...coffee fell to 7? in 1933. Highest level since has been 11½ touched early this year following a conference in Bogota which seemed to promise that Brazil might finally get some cooperation from other coffee producing nations. For that is the crux of the problem. While Brazil has rigorously and painfully sliced away at her own surplus, necessarily sacrificing some part of her share of the world market, rival nations, notably Colombia, have greedily continued to grow and sell more & more coffee. In the crop year ended June 30, Brazilian coffee exports were off 12%, those of rival nations...
...first time, Willis Carrier put the first airconditioning system in the plant of a Manhattan lithographer who found that on hot days the humidity wrinkled his paper. By 1906 Willis Carrier had devised an air conditioning system for use in cotton mills, which up to then had such a problem keeping humidity in their spinning rooms that they operated with windows open in the dead of winter. Five years later he worked out an engineering formula for atmosphere-moisture which made people begin calling him "the father of the airconditioning industry." And by 1915 he had enough capital to start...
...increasing number of automobile trailers presents the problem of safe disposal of human wastes from such trailors in order to prevent the spread of possible infection...
...These problems, together with the problem of stabilization of organic matter in municipal sewage treatment works, are representative of the researches in progress at the present time...
...quantiative measurement of smells and odors was long considered a difficult problem in applied science until Professor Gordon M. Fair and Mr. William F. Wells developed their osmoscope...