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  1. The affinities of the North American species of Gomphus as revealed by the genitalia (Odonata, Gomphidae) /
    By: Walker, E. M. (Edmund Murton), - Royal Ontario Museum.
    Publication info: Toronto :Royal Ontario Museum,1957.
    Holding Institution: University of Toronto - Royal Ontario Museum Library & Archives
    Subjects: Gomphus (Fungi)  physiology  
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