Showing 1 - 3 results of 3 for search 'Shrock, Robert R. 1904-1993', query time: 0.01s Refine Results
  1. 1

    Principles of invertebrate paleontology by Twenhofel, William H. 1875-1957

    Published 1953
    Book

    Principles of invertebrate paleontology
  2. 2

    Index fossils of North America a new work based on the complete revision and reillustration of Grabau and Shimer's "North American index fossils," by Hervey W. Shimer and Robert R.... by Shimer, Hervey Woodburn 1872-1965

    Published 1944
    Book

    Index fossils of North America a new work based on the complete revision and reillustration of Grabau and Shimer's "North American index fossils," by Hervey W. Shimer and Robert R. Shrock.
  3. 3

    Invertebrate paleontology by Twenhofel, William H. 1875-1957

    Published 1935
    Book

    Invertebrate paleontology

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