dcsimg
Please read BHL's Acknowledgment of Harmful Content
Sort By:
  1. By: Ludwig, Daniel - Barsa, Mary C
    Type: Article
    In: Journal of the New York Entomological Society
    Volume: 67
    Date: 1959
    Page Range: 151--156
    Publication Info: Lawrence, Kan Allen Press [etc.]
  2. By: Ludwig, Daniel - Barsa, Mary C
    Type: Article
    In: Journal of the New York Entomological Society
    Volume: 65
    Date: 1957
    Page Range: 107--111
    Publication Info: Lawrence, Kan Allen Press [etc.]
  3. By: Ludwig, Daniel - Barsa, Mary C
    Type: Article
    In: The Biological bulletin
    Volume: 110
    Date: 1956-02-01
    Page Range: 77--82
    Publication Info: Woods Hole, Mass Marine Biological Laboratory