Advances in comparative leukemia research 1979 : proceedings of the IXth International Symposium on Comparative Research on Leukemia and Related Diseases, held in Pitsunda, U.S.S.R., on 3-6 October, 1979 / editors: David S. Yohn, Boris A. Lapin, James R. Blakeslee.

Comparative pathology in monkeys / by B.A. Lapin and L.A. Yakovleva.

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