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000056930 1001_ $$aLevins, Richard.
000056930 24510 $$aEvolution in changing environments;$$bsome theoretical explorations.
000056930 260__ $$aPrinceton, N.J.,$$bPrinceton University Press,$$c1968.
000056930 300__ $$aix, 120 p.$$billus.$$c23 cm.
000056930 4901_ $$aMonographs in population biology,$$vno. 2
000056930 504__ $$aBibliography: p. 113-116.
000056930 650_0 $$aAnimal populations.
000056930 650_0 $$aPopulation genetics.
000056930 650_0 $$aEvolution.
000056930 650_0 $$aEcology.
000056930 830_0 $$aMonographs in population biology,$$vno. 2.
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