Fighting our insect enemies : Achievements of professional entomology, 1854-1954
United States Department of Agriculture
Fighting our insect enemies : Achievements of professional entomology, 1854-1954 - Washington 1954 - 23 p. - No. 121; United States Depart .
632.7(092)
Fighting our insect enemies : Achievements of professional entomology, 1854-1954 - Washington 1954 - 23 p. - No. 121; United States Depart .
632.7(092)