The New Encyclopædia BritannicaEncyclopaedia Britannica, Incorporated, 1987 - Encyclopedias and dictionaries |
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Page 55
... occurs as the rainfall decreases from 30 to 20 inches a year . Small ( 20 to 30 feet ) deciduous or fine - leaved trees ( mainly aca- cia ) occur at intervals , rising from a continuous sheet of perennial grass two to four feet tall ...
... occurs as the rainfall decreases from 30 to 20 inches a year . Small ( 20 to 30 feet ) deciduous or fine - leaved trees ( mainly aca- cia ) occur at intervals , rising from a continuous sheet of perennial grass two to four feet tall ...
Page 698
... occur in any of several types of habitat , but in general none is conspicuous . Even the Aizoaceae in the southern African deserts are not conspicuous except when they are in flower . Characteristic geographical distribution patterns occur ...
... occur in any of several types of habitat , but in general none is conspicuous . Even the Aizoaceae in the southern African deserts are not conspicuous except when they are in flower . Characteristic geographical distribution patterns occur ...
Page 714
... occur ; soil moisture , however , is always abundant in those places . It is seldom that the willows or poplars form pure stands . They are more commonly associated with birches and alders , or otherwise grow as part of the understory ...
... occur ; soil moisture , however , is always abundant in those places . It is seldom that the willows or poplars form pure stands . They are more commonly associated with birches and alders , or otherwise grow as part of the understory ...
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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