TY  - BOOK
AU  - Gossard, H. A.
AU  - Houser, J. S.
TI  - The spring canker worm
U1  - PA-C 632.9 T4 
CY  - Wooster, Ohio
PB  -  Agricultural Experiment Station
KW  - Control de plagas  Arboles frutales
KW  -  Plagas
ER  -