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1031. Letter from Francis Crick to Georg Kreisel

1032. Letter from Francis Crick to Georg Kreisel

1033. Letter from Francis Crick to Georg Kreisel

1034. The Genetic Code for Proteins

1035. Letter from Francis Crick to Francois Jacob

1036. Letter from Francois Jacob to Francis Crick

1037. Letter from Vernon M. Ingram to Francis Crick

1038. Letter from Francis Crick to Vernon M. Ingram

1039. Letter from Francis Crick to Vernon M. Ingram

1040. Letter from Vernon M. Ingram to Francis Crick