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  1. By: Clarke, Roger
    Type: Article
    In: The festivus
    Volume: 52
    Issue: 1
    Date: 2020
    Page Range: 70--76
    Publication Info: San Diego San Diego Shell Club 1970-
  2. By: Clark, William S. - Clarke, Roger
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 118
    Date: 1998
    Page Range: 52--54
    Publication Info: London, British Ornithologists' Club, 1893-
  3. By: Clarke, Roger
    Type: Article
    In: The festivus
    Volume: 54
    Issue: 2
    Date: 2022
    Page Range: 179--179
    Publication Info: San Diego San Diego Shell Club 1970-
  4. By: Clarke, Roger
    Type: Article
    In: The festivus
    Volume: 54
    Issue: 3
    Date: 2022
    Page Range: 221--226
    Publication Info: San Diego San Diego Shell Club 1970-
  5. By: Coan, Eugene V. - Clarke, Roger
    Type: Article
    In: The festivus
    Volume: 53
    Issue: 2
    Date: 2021
    Page Range: 140--141
    Publication Info: San Diego San Diego Shell Club 1970-
  6. By: Clarke, Roger
    Type: Article
    In: The festivus
    Volume: 50
    Issue: 2
    Date: 2018
    Page Range: 114--116
    Publication Info: San Diego San Diego Shell Club 1970-
  7. By: Berschauer, David - Petuch, Edward - Clarke, Roger
    Type: Article
    In: The festivus
    Volume: 50
    Issue: 3
    Date: 2018
    Page Range: 139--146
    Publication Info: San Diego San Diego Shell Club 1970-
  8. By: Tuskes, Paul - Clarke, Roger
    Type: Article
    In: The festivus
    Volume: 50
    Issue: 4
    Date: 2018
    Page Range: 236--238
    Publication Info: San Diego San Diego Shell Club 1970-
  9. By: Clarke, Roger
    Type: Article
    In: The festivus
    Volume: 51
    Issue: 2
    Date: 2019
    Page Range: 103--107
    Publication Info: San Diego San Diego Shell Club 1970-
  10. By: Clarke, Roger
    Type: Article
    In: The festivus
    Volume: 48
    Issue: 2
    Date: 2016
    Page Range: 73--83
    Publication Info: San Diego San Diego Shell Club 1970-
  11. By: Clarke, Roger
    Type: Article
    In: The festivus
    Volume: 50
    Issue: 4
    Date: 2018
    Page Range: 217--222
    Publication Info: San Diego San Diego Shell Club 1970-
  12. By: Clarke, Roger
    Type: Article
    In: The journal of the Bombay Natural History Society
    Volume: 93
    Date: 1996
    Page Range: 44--50
    Publication Info: Bombay Bombay Natural History Society 1886-
  13. By: Clarke, Roger
    Type: Article
    In: The festivus
    Volume: 48
    Issue: 1
    Date: 2016
    Page Range: 32--32
    Publication Info: San Diego San Diego Shell Club 1970-
  14. By: Clarke, Roger
    Type: Article
    In: The festivus
    Volume: 52
    Issue: 4
    Date: 2020
    Page Range: 294--315
    Publication Info: San Diego San Diego Shell Club 1970-
  15. By: Clarke, Roger
    Type: Article
    In: The festivus
    Volume: 54
    Issue: 4
    Date: 2022
    Page Range: 174--178
    Publication Info: San Diego San Diego Shell Club 1970-