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Journal Article
Hoffmann CH.  1932.  The biology of three North American species of Mesovelia (Hemiptera-Mesoveliidae). The Canadian Entomologist. 64:88-94,113-120,126-133.
Hoffmann CH.  1931.  Chironomid larvae associated with watersnails. Bulletin of the Brooklyn Entomological Society. 26:71-74.
Hoffmann CH.  1932.  Hymenopterous parasites from the eggs of aquatic and semi-aquatic insects. Journal of the Kansas Entomological Society. 5:33-37.