The bionomics of entomophagous Coleoptera / by Walter Valentine Balduf. The bionomics of entomophagous insects. Balduf, Walter Valentine, 1889-1969. Beetles. Animal ecology. QL497 .B33 591.5 BAB "Planographed." Part II has title: The bionomics of entomophagous insects. Includes bibliographies. St. Louis, Chicago : John S. Swift , c1935. c1935. 1935 Text 2 v. eng