dcsimg
Please read BHL's Acknowledgment of Harmful Content
Sort By:
  1. By: Jerath, M L - Ritcher, Paul O.
    Type: Article
    In: The Pan-Pacific entomologist
    Volume: 35
    Date: 1959
    Page Range: 169--175
    Publication Info: San Francisco, Pacific Coast Entomological Society,
  2. By: Howden, Henry F. (Henry Fuller) - Ritcher, Paul O.
    Type: Article
    In: The Coleopterists' Bulletin
    Volume: 6
    Issue: 4
    Date: 1952
    Page Range: 53--57
    Publication Info: [Washington, D.C. etc.], Coleopterists' Society,
  3. By: Ritcher, Paul O.
    Type: Article
    In: The Coleopterists' Bulletin
    Volume: 27
    Issue: 3
    Date: 1973
    Page Range: 113--116
    Publication Info: [Washington, D.C. etc.], Coleopterists' Society,
  4. By: Ritcher, Paul O.
    Type: Article
    In: The Pan-Pacific entomologist
    Volume: 23
    Date: 1947
    Page Range: 11--20
    Publication Info: San Francisco, Pacific Coast Entomological Society,
  5. By: Ritcher, Paul O. - Richter
    Type: Article
    In: The Coleopterists' Bulletin
    Volume: 23
    Issue: 4
    Date: 1969
    Page Range: 89--92
    Publication Info: [Washington, D.C. etc.], Coleopterists' Society,
  6. By: Carlson, David C. - Ritcher, Paul O.
    Type: Article
    In: The Pan-Pacific entomologist
    Volume: 50
    Issue: 2
    Date: 1974
    Page Range: 99--110
    Publication Info: San Francisco, Pacific Coast Entomological Society,
  7. By: Ritcher, Paul O.
    Type: Article
    In: Entomological news
    Volume: 48
    Date: 1937
    Page Range: 285--287
    Publication Info: [Philadelphia], American Entomological Society, 1925-
  8. By: Ritcher, Paul O.
    Type: Article
    In: The Pan-Pacific entomologist
    Volume: 38
    Date: 1962
    Page Range: 163--166
    Publication Info: San Francisco, Pacific Coast Entomological Society,
  9. By: Alpert, Gary D. - Ritcher, Paul O.
    Type: Article
    In: Psyche
    Volume: 82
    Date: 1975
    Page Range: 283--291
    Publication Info: Cambridge, Mass, Cambridge Entomological Club,
  10. By: Ritcher, Paul O.
    Type: Article
    In: The Pan-Pacific entomologist
    Volume: 42
    Date: 1966
    Page Range: 274--282
    Publication Info: San Francisco, Pacific Coast Entomological Society,
  11. By: Ritcher, Paul O. - Baker, Charles W. (Charles William),
    Type: Article
    In: Proceedings of the Entomological Society of Washington
    Volume: 76
    Date: 1974
    Page Range: 480--494
    Publication Info: Washington, etc, Entomological Society of Washington,
  12. By: Cazier, M - Ritcher, Paul O.
    Type: Article
    In: The Coleopterists' Bulletin
    Volume: 9
    Issue: 1
    Date: 1955
    Page Range: 16--16
    Publication Info: [Washington, D.C. etc.], Coleopterists' Society,