Psocids, Annoying House Pests U.S. Dept. of Agriculture. Bureau of Entomology and Plant Quarantine Published: 1941 Total Pages: Get eBook
Book-lice Or Psocids United States. Department of Agriculture Published: 1922 Total Pages: 4 Get eBook
Leaflet - United States Department of Agriculture United States. Dept. of Agriculture Published: 1941 Total Pages: 12 Get eBook