Pear thrips
Moulton, Dudley
Pear thrips - Washington 1909 - 1-14 p. - Pear, Index United States Department of Agriculture, Bureau of Entomology. Bulletin No. 68 Part I .
Pear thrips - Washington 1909 - 1-14 p. - Pear, Index United States Department of Agriculture, Bureau of Entomology. Bulletin No. 68 Part I .