Insecticide recommendations of the entomology research branch for the control of
Knipling, E.F.
Insecticide recommendations of the entomology research branch for the control of - Washington 1956 - 97 p. - No. 103; United States Depart .
632.951
Insecticide recommendations of the entomology research branch for the control of - Washington 1956 - 97 p. - No. 103; United States Depart .
632.951