A leaf punch for sampling insecticide residues on foliage
[Washington, D.C.], [U.S. Department of Agriculture, Bureau of Entomology and Plant Quarantine], [1949]
1949
University of Florida, George A. Smathers Libraries with support from LYRASIS and the Sloan Foundati
Copyright Status:
Public domain. The BHL considers that this work is no longer under copyright protection.