Edit Profile (opens in new tab) Schaeffer, A. D. Co-Author Distance Author ID: schaeffer.a-d Published as: Schaeffer, A. D. Documents Indexed: 1 Publication since 1946 Co-Authors: 1 Co-Author with 1 Joint Publication 26 Co-Co-Authors Co-Authors 0 single-authored 1 Spencer, Donald Clayton Serials 1 Proceedings of the National Academy of Sciences of the United States of America Fields Publications by Year