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Start Over You searched for: Dates by Range 1950-1999 Remove constraint Dates by Range: 1950-1999 Publication Year 1980 Remove constraint Publication Year: <span class="single" data-blrl-single="1980">1980</span>

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111. Letter from Joshua Lederberg to John J. McCloy

113. Letter from John J. McCloy to Joshua Lederberg

114. Letter from Joshua Lederberg to John McCullough

116. Letter from Peter Medawar to Joshua Lederberg