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  1. By: Knops, Johannes M H - Barthell, John F
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 43
    Date: 1996
    Page Range: 85--92
    Publication Info: Berkeley California Botanical Society
  2. By: Koenig, Walter D, - Knops, Johannes M H
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 54
    Issue: 4
    Date: 2007
    Page Range: 269--274
    Publication Info: Berkeley California Botanical Society
  3. By: Koenig, Walter D, - Walters, Eric L - Pearse, Ian S - Carmen, William J - Knops, Johannes M H
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 61
    Date: 2014
    Page Range: 151--158
    Publication Info: Berkeley California Botanical Society
  4. By: Koenig, Walter D, - Mccullough, Dale R - Vaughn, Charles E - Knops, Johannes M H - Carmen, William J
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 46
    Date: 1999
    Page Range: 20--24
    Publication Info: Berkeley California Botanical Society
  5. By: Knops, Johannes M H - Koenig, Walter D,
    Type: Article
    In: Madroño; a West American journal of botany
    Volume: 41
    Date: 1994
    Page Range: 290--301
    Publication Info: Berkeley California Botanical Society