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3. BRADLEY, R. A., Are populations of the Desert Grassland Scorpion (Paruroctonus utahensis) limited by food abundance? Southwest. Natural. (in press).
4. Phylogeny and classification of the aculeate Hymenoptera, with special reference to Mutillidae.;BROTHERS;Univ. Kansas Science Bull.,1975
5. Biology of desert invertebrates.;CRAWFORD,1981