1. Letter from Alexander Rich to Francis Crick Publication: Produced: 9 August 1974 Subject(s): RNA, TransferEthics, Professional Archival Collection: The Francis Crick Papers (Profiles in Science)
2. Letter from Alexander Rich to Francis Crick Publication: Produced: 11 October 1974 Subject(s): RNA, TransferEthics, Professional Archival Collection: The Francis Crick Papers (Profiles in Science)