The New Encyclopædia BritannicaEncyclopaedia Britannica, Incorporated, 1987 - Encyclopedias and dictionaries |
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Page 181
... increased through agricultural research , however , crop production per acre increased dramatically . Between 1940 and 1980 in the United States , for example , per - acre yields of corn tripled , those of wheat and soybeans doubled ...
... increased through agricultural research , however , crop production per acre increased dramatically . Between 1940 and 1980 in the United States , for example , per - acre yields of corn tripled , those of wheat and soybeans doubled ...
Page 222
... increasing worldwide Kinds and distributions . The worldwide pattern of to- tal alcohol consumption on a per capita basis increased generally during the period after 1950. The per capi- ta consumption of distilled spirits , beer , and ...
... increasing worldwide Kinds and distributions . The worldwide pattern of to- tal alcohol consumption on a per capita basis increased generally during the period after 1950. The per capi- ta consumption of distilled spirits , beer , and ...
Page 226
... increasing . High estimates are then likely to emerge , based on local and insufficiently refined data . Often , increased admissions to hospitals for alcoholic mental disorders and sometimes increased con- sumption of alcohol are cited ...
... increasing . High estimates are then likely to emerge , based on local and insufficiently refined data . Often , increased admissions to hospitals for alcoholic mental disorders and sometimes increased con- sumption of alcohol are cited ...
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20th century Abelian group addition adhesives Afghanistan agricultural Albanian alcohol algebra animal associated Bantu Basin British called carved cement central centre ceremonial climate coast colonial common complex numbers Congo contains countries crops cultivation culture dance defined desert developed drinking drug East eastern economic Egypt elements equations European example farm feet field figures finite fish forest functor Ghana important Indians integers irrigation isomorphism Kenya Lake Lake Victoria land lattice Lie algebra linear major mapping masks miles modern mountains Mozambique multiplication Niger Niger River Nigeria Nile northern operations patterns percent period Plains plant Plateau polynomial population rainfall real numbers region ring river Sahara savanna sculpture social society soil South Africa southern subgroup Sudan theory tion trade traditional tribes United Valley vector space vegetation village West Africa western Yoruba Zaire Zimbabwe