An annotated bibliography on Aphelinus mali (Hald.), a parasite of the wooly apple aphid, 1851-1950
[Washington, D.C.], U.S. Dept. of Agriculture, Agricultural Research Administration, Bureau of Entomology and Plant Quarantine, [1953]
1953
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.