TY  - BOOK
AU  - Pettey, F.W.
TI  - Biological control of prickly pears in South Africa
U1  - 632.96 21st ed.
PY  - 1947///
CY  - South Africa
PB  - The Government Printing
KW  - Biological control
KW  - Insects
KW  - Botanical Position
ER  -