Cook, O. F. (Orator Fuller), 1867-1949. 8157
Millipeds of the order Colobognatha, with descriptions of six new genera and type species, from Arizona and California / by O. F. Cook and H. L. Loomis ...
Washington : Smithsonian inst. U.S. National museum, 1928.
Loomis, H. F. (Harold Frederick), 1896-, joint author.