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Cell Fusion and the New Genetics by Joshua Lederberg from SCIENCE YEAR, The 1972 World Book Science Annual c. 1971 Field Enterprises Educational Corporation., http://www.worldbook.com/, and Reproduced with permission of World Book, Inc..
Monograph. Lederberg, Joshua. "Cell Fusion and the New Genetics." Science Year of the World Book Encyclopedia. World Book, Inc., 1972. Excerpt. Monograph. 13 Images.. Lederberg UI. P190