At head of tltle: Issued Aug. 15,1917. U.S. Dept. of agriculture, Office of the secretary. Contribution from the Bureau of entomology, L. O. Howard, chief, in collaboration with the Federal horticultural board, C. L. Martlatt, chairman
Read book A Manual of Dangerous Insects Likely to Be Introduced in the United States Through Importations for free
User Reviews: