The New Encyclopædia Britannica: L-ZEncyclopædia Britannica, 1992 - 32 pages |
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Page 309
... North America has not been accurately estab- lished , but it is assumed to have occurred sometime during the last glacial period , about 20,000 to 35,000 years ago ( though some authorities have argued for an even earlier date , some ...
... North America has not been accurately estab- lished , but it is assumed to have occurred sometime during the last glacial period , about 20,000 to 35,000 years ago ( though some authorities have argued for an even earlier date , some ...
Page 310
... north - south ranges cutting from Alaska to Central America ; in the area of Canada and the United States they enclose , from north to south , a large plateau of grasslands and forests , an even broader , arid plateau known as the Great ...
... north - south ranges cutting from Alaska to Central America ; in the area of Canada and the United States they enclose , from north to south , a large plateau of grasslands and forests , an even broader , arid plateau known as the Great ...
Page 408
... North America , 2nd ed . rev . ( 1969 ) ; A.L. KROEBER , Cultural and Natural Areas of Native North America ( 1939 ) ; RUTH M. UNDERHILL , Red Man's Amer- ica ( 1953 ) ; PAUL S. MARTIN , GEORGE I. QUIMBY , and DONALD COLLIER , Indians ...
... North America , 2nd ed . rev . ( 1969 ) ; A.L. KROEBER , Cultural and Natural Areas of Native North America ( 1939 ) ; RUTH M. UNDERHILL , Red Man's Amer- ica ( 1953 ) ; PAUL S. MARTIN , GEORGE I. QUIMBY , and DONALD COLLIER , Indians ...
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20th century Abelian group addition aesthetic Afghanistan agriculture Albania alcohol algae algebra animals basin called central centre ceremonial climate coast common complex numbers Congo contains Côte d'Ivoire countries crops cultivation culture dance defined desert developed drinking drug East eastern economic Egypt elements equations European example farm feet field Figure finite fish forest functor Igbo important Indians integers irrigation isomorphism Kabul Kenya Lake Lake Chad Lake Victoria land language lattice Lie algebra linear major mapping miles modern mountains Niger Nigeria Nile northern operations patterns percent period Plains plants Plateau polynomial population rainfall real numbers region ring ritual River Sahara savanna social soil South Africa southern Africa species subgroup Sudan Tanzania theory tion traditional tribes tropical United valley vector space vegetation village West Africa western x₁ Yoruba Zaire Zambia Zimbabwe