Control of the pear thrips
Phipps, C.R.
Control of the pear thrips - Geneva 1921 - 1-11 p. - Thrips New York Agricultural Experiment Station. Bulletin No. 484 .
Control of the pear thrips - Geneva 1921 - 1-11 p. - Thrips New York Agricultural Experiment Station. Bulletin No. 484 .