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  1. By: Backus, Richard H.
    Publication info: 1957
    Holding Institution: American Museum of Natural History Library
  1. By: Backus, Richard H.
    Type: Article
    In: Breviora
    Volume: 159
    Date: 1962
    Page Range: 1--4
    Publication Info: Cambridge, Mass Museum of Comparative Zoology, Harvard University [1952-
  2. By: Backus, Richard H. - Polloni, P T - Reid, B L - Somers, P - Hendrickson, T O
    Type: Article
    In: Rhodora
    Volume: 104
    Date: 2002
    Page Range: 219--252
    Publication Info: [Cambridge, Mass., etc.], New England Botanical Club [etc.],
  3. By: Raney, Edward C. (Edward Cowden), - Backus, Richard H. - Crawford, Ronald W - Robins, C. Richard
    Type: Article
    In: Zoologica : scientific contributions of the New York Zoological Society
    Volume: 38
    Issue: 6
    Date: 1953-09-15
    Page Range: 97--104
    Publication Info: New York,