TY  - BOOK
AU  - Cooley, R.  A
AU  - Parker, J. R. Reagan, W. S.
TI  - Spraying for oyster-shell scale
CY  - Bozeman, Montana
PB  -  Agricultural Experiment Station
KW  - Lepidosaphes ulmi  Aspersion
KW  -  Efecto en arboles frutales
ER  -