The New Encyclopaedia Britannica: Macropaedia: knowledge in depth. 19 vEncyclopaedia Britannica, Incorporated, 1981 - Encyclopedias and dictionaries |
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Page 316
... agriculture . Experience in the developing countries has shown that agriculture can be made much more produc- tive with the proper investment in research , fertilizers , in- secticides , and herbicides . Improvement of irrigation sys ...
... agriculture . Experience in the developing countries has shown that agriculture can be made much more produc- tive with the proper investment in research , fertilizers , in- secticides , and herbicides . Improvement of irrigation sys ...
Page 324
... agriculture during the 19th century ; H.C. and A.D. TAYLOR , The Story of Agricultural Economics in the United States , 1840-1932 ( 1952 ) , a history of develop- ments in U.S. agricultural economics ; UNITed states depaRT- MENT OF ...
... agriculture during the 19th century ; H.C. and A.D. TAYLOR , The Story of Agricultural Economics in the United States , 1840-1932 ( 1952 ) , a history of develop- ments in U.S. agricultural economics ; UNITed states depaRT- MENT OF ...
Page 347
... Agriculture , " Am . Hist . Rev. , 75 : 1–36 ( 1969 ) , a consideration of the evidence for early agriculture in China ; HENRI FRANK- FORT , The Birth of Civilization in the Near East ( 1951 ) , an account of agriculture at the ...
... Agriculture , " Am . Hist . Rev. , 75 : 1–36 ( 1969 ) , a consideration of the evidence for early agriculture in China ; HENRI FRANK- FORT , The Birth of Civilization in the Near East ( 1951 ) , an account of agriculture at the ...
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19th century abrasive accelerator acid actinide actor Adams adhesives administrative adult advertising Aegean aerospace Aeschylus aesthetic Afghanistan agriculture aircraft airplane animals artist atomic Bantu Bantu languages basic behaviour Bronze Age Cameroon carved Central centre changes Chari-Nile languages coast Congo contains countries Cretan Crete crops cultural Cyclades dance Djibouti early East Egypt electrons engineering Ethiopia example farm feet figures flight Ghana important increase industry Kabul Kenya Khoisan Knossos known Lake land languages mainland major masks ment metal modern mountains Mycenae Niger Nigeria Nilotic northern organization oxidation particles patterns percent period plants political population production proton region River Sahara savanna sculpture soil solvent South Africa southern species style Sudan Tanzania temperature theory tion tons traditional tropical United usually West Africa western Yoruba Zaire