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P.O. Ritcher. 1966. White Grubs and their allies. A Study of North America Scarabaeoid Larvae


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P.O. Ritcher. 1966.
White Grubs and their allies. A Study of North America Scarabaeoid Larvae.
Oregon State Monographs. Studies in Entomology. 1966. No 4. 219 pp.



PDF: ritcher_1966.pdf