Showing 1 - 4 results of 4 for search 'Usinger, Robert L. (Robert Leslie) 1912-1968', query time: 0.01s Refine Results
  1. 1

    Elements of zoology by Storer, Tracy Irwin 1889-

    Published 1968
    Book

    Elements of zoology
  2. 2

    The life of rivers and streams by Usinger, Robert L. (Robert Leslie), 1912-1968

    Published 1967
    Book

    The life of rivers and streams
  3. 3

    Aquatic insects of California with keys to North American genera and California species by Usinger, Robert L. (Robert Leslie) 1912-1968

    Published 1963
    Book

    Aquatic insects of California with keys to North American genera and California species
  4. 4

    General zoology by Storer, Tracy Irwin, 1889-, Usinger, Robert L. (Robert Leslie), 1912-1968

    Published 1957
    Book

    General zoology

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