TY  - BOOK
AU  - Newcomer, E. J.
TI  - Orchard insects of the Pacific Northwest and their control
CY  - Washington
PB  -  Department of Agriculture
KW  - Manzana
KW  -  Plagas  Arboles frutales
KW  -  Plagas  Pera
KW  -  Plagas  Control de plagas
ER  -