Biological insect pest suppression
Coppel, Harry C; Mertins, James W
Biological insect pest suppression - - Springer-Verlag, New York 1977 - - .
Biological control of pests--agriculture
632.96 COP-B
Biological insect pest suppression - - Springer-Verlag, New York 1977 - - .
Biological control of pests--agriculture
632.96 COP-B