dcsimg
Please read BHL's Acknowledgment of Harmful Content
Sort By:
  1. By: Duffield, Richard M.
    Type: Article
    In: Proceedings of the Entomological Society of Washington
    Volume: 83
    Date: 1981
    Page Range: 60--63
    Publication Info: Washington, etc, Entomological Society of Washington,
  2. By: Duffield, Richard M. - Sheridan, Philip M
    Type: Article
    In: Proceedings of the Entomological Society of Washington
    Volume: 109
    Date: 2007
    Page Range: 489--492
    Publication Info: Washington, etc, Entomological Society of Washington,
  3. By: Duffield, Richard M.
    Type: Article
    In: Proceedings of the Entomological Society of Washington
    Volume: 83
    Date: 1981
    Page Range: 716--724
    Publication Info: Washington, etc, Entomological Society of Washington,
  4. By: Nelson, C H - Hamilton, Robert, IV - Duffield, Richard M.
    Type: Article
    In: Entomological news
    Volume: 113
    Date: 2002
    Page Range: 137--139
    Publication Info: [Philadelphia], American Entomological Society, 1925-
  5. By: Birmingham, F. - Riddick, E W - LaBerge, Wallace E. - Wheeler, J. W. - Duffield, Richard M.
    Type: Article
    In: Journal of the Washington Academy of Sciences
    Volume: 74
    Date: 1984
    Page Range: 47--50
    Publication Info: Washington [etc Washington Academy of Sciences]
  6. By: Duffield, Richard M. - Snelling, Roy R. - Fales, Henry M. - Blum, Murray S. (Murray Sheldon),
    Type: Article
    In: Journal of Hymenoptera research
    Volume: 18
    Date: 2009
    Page Range: 140--144
    Publication Info: Washington, D.C, International Society of Hymenopterists, [1992-
  7. By: Courtney, Gregory W. - Duffield, Richard M.
    Type: Article
    In: The Pan-Pacific entomologist
    Volume: 76
    Issue: 2
    Date: 2000
    Page Range: 87--94
    Publication Info: San Francisco, Pacific Coast Entomological Society,
  8. By: Duffield, Richard M. - Nelson, C H
    Type: Article
    In: Proceedings of the Entomological Society of Washington
    Volume: 99
    Date: 1997
    Page Range: 374--375
    Publication Info: Washington, etc, Entomological Society of Washington,
  9. By: Pittman, J L - Turner, T. S. - Frederick, L - Petersen, R L - Poston, M E - Mackenzie, M - Duffield, Richard M.
    Type: Article
    In: Entomological news
    Volume: 107
    Date: 1996
    Page Range: 137--140
    Publication Info: [Philadelphia], American Entomological Society, 1925-
  10. By: Bordelais, J.-P. - Duffield, Richard M.
    Type: Article
    In: Proceedings of the Entomological Society of Washington
    Volume: 101
    Date: 1999
    Page Range: 692--694
    Publication Info: Washington, etc, Entomological Society of Washington,
  11. By: Stewart, K D - Nelson, C H - Duffield, Richard M.
    Type: Article
    In: Entomological news
    Volume: 112
    Date: 2001
    Page Range: 225--229
    Publication Info: [Philadelphia], American Entomological Society, 1925-
  12. By: Duffield, Richard M. - Nelson, C H
    Type: Article
    In: Proceedings of the Entomological Society of Washington
    Volume: 92
    Date: 1990
    Page Range: 120--126
    Publication Info: Washington, etc, Entomological Society of Washington,
  13. By: Stewart, K D - Duffield, Richard M.
    Type: Article
    In: Proceedings of the Entomological Society of Washington
    Volume: 101
    Date: 1999
    Page Range: 459--460
    Publication Info: Washington, etc, Entomological Society of Washington,