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,
University of Florida, George A. Smathers Libraries with support from LYRASIS and the Sloan Foundati
Public domain. The BHL considers that this work is no longer under copyright protection.