Biodiversity Heritage Library
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By "Jones, P. R. (Paul Robert), "
How to control the pear thrips. (Euthrips pyri Daniel) /
By: Foster, Shirley Watson. - Jones, P. R. - United States. - United States.
Publication info: Washington, D.C. :U.S. Dept. of Agriculture, Bureau of Entomology,1911.
Contributed by: Unknown
The life history and habits of the pear thrips in California /
By: Foster, S. W. - Jones, P. R.
Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1915.
Contributed by: U.S. Department of Agriculture, National Agricultural Library