Advances in comparative leukemia research 1977 : proceedings of the VIIIth International Symposium on Comparative Research on Leukemia and Related Diseases, held in Amsterdam, The Netherlands, on 22-26 August 1977 / edited by Peter Bentvelzen, Jo Hilgers, and David S. Yohn.

RNA viruses and host genome in oncogenesis : proceedings of a conference held in Amsterdam, May 12-15, 1971 / editors P. Emmelot, P. Bentvelzen.

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