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  1. By: Goplin, B. P., - Moyer, J. R. - Richards, K. W.
    Edition: Éd. rev.
    Publication info: Ottawa :Direction générale des communications, Agriculture Canada,1991.
    Holding Institution: Agriculture and Agri-Food Canada (archive.org)
  2. By: Goplen, B. P., - Moyer, J. R. - Richards, K. W. - Canada. Agriculture Canada. Communications Branch.
    Edition: Rev. 1991.
    Publication info: Ottawa :Communications Branch, Agriculture Canada,1991.
    Holding Institution: Agriculture and Agri-Food Canada (archive.org)
  1. By: Richards, K. W.
    Type: Article
    In: Quaestiones entomologicae
    Volume: 9
    Issue: 2
    Date: 1973
    Page Range: 115--158
    Publication Info: Edmonton,Dept. of Entomology, University of Alberta.
  2. By: Richards, K. W.
    Type: Article
    In: Revue suisse de zoologie
    Volume: 100
    Date: 1993
    Page Range: 807--822
    Publication Info: Genève,Kundig [etc.]