TY  - BOOK
AU  - Blanchard, R. A.
AU  - Hedden, O. K.
AU  - Walker, H. B. 
TI  - Burning for the control of aphids on alfalfa in the Antelope valley of California
CY  - Washington
PB  -  Department of Agriculture
KW  - Quema de tierras  Control de plagas  Alfalfa
KW  -  Plagas
ER  -