1. 1.
    -2
    Dipnotlar:



    1- R. B. Lindsay, American Scientist, Voi. 56, p. 100, 1968.
    2- H. Blum, American Scientist, Vol. 43, p. 595, 1955.
    3- 1. Asimov, Smithsonian Institute Journal, June, p. 6, 1970.
    4- J. Huxley, «Evolution and Genetics» in What Is Science?, J. R. Newman, Ed., Simon and Schuster, New York, p. 272,1955.
    5- G. G. Simpson and W. S. Beck. Life: An Introduction to Biology, 2 nd Ed.,
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