Books by Rheinart Parker Cowles:
Books in the extended shelves:
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Cowles, Rheinart Parker, 1872-1948: Phoronis architecta : its life history, anatomy and breeding habits (National Academy of Sciences :, 1905), also by William Keith Brooks and National Academy of Sciences (U.S.) (page images at HathiTrust)
Find more by Rheinart Parker Cowles at your library, or elsewhere.