The New Encyclopaedia Britannica: Macropaedia: knowledge in depth. 19 vEncyclopaedia Britannica, Incorporated, 1981 - Encyclopedias and dictionaries |
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Page 320
... LAND , OUTPUT , AND YIELDS Land and Only a small fraction of the world's land area - about population 11 percent - may be considered arable , if arable land is defined as land planted to crops , including temporary fallow and temporary ...
... LAND , OUTPUT , AND YIELDS Land and Only a small fraction of the world's land area - about population 11 percent - may be considered arable , if arable land is defined as land planted to crops , including temporary fallow and temporary ...
Page 332
... land separated from each other by a furrow , balk ( ridge of land left after plowing ) , or mere ( boundary ) , is obscure ( Figure 5 ) . The earliest examples of this system By courtesy of the R.A.F. , Crown copyright reserved Figure 5 ...
... land separated from each other by a furrow , balk ( ridge of land left after plowing ) , or mere ( boundary ) , is obscure ( Figure 5 ) . The earliest examples of this system By courtesy of the R.A.F. , Crown copyright reserved Figure 5 ...
Page 365
... land - grant col- lege system authorized in 1862 for each state tended to concentrate research in the hands of professionally trained people . The state experiment stations , which be- gan in 1887 , followed by extension services in ...
... land - grant col- lege system authorized in 1862 for each state tended to concentrate research in the hands of professionally trained people . The state experiment stations , which be- gan in 1887 , followed by extension services in ...
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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