REFERENCES

Milner, Richard 1990. The Encyclopedia of Evolution, an Owl Book, Henry Holt and Company. New York

Futuyma, Douglas J. 1986. Evolutionary Biology, Sinauer Associates, inc. Sunderland, Mass.

Glass,B., O. Temkin, and W.L. Strauss (eds.). 1959. Forerunners of Darwin: 1745-1859. Johns Hopkins Press, Baltimore.

Bowler, Peter J. 1989. Evolution: The History of an Idea. University of Califonia Press, Berkeley.