TY  - BOOK
AU  - "Hough,W.S. & Mason, A.F."
TI  - "Spraying, Dusting and Fumigating of plants : Principles & applications."
U1  - 632 :934   J1 
PY  - 0000///New York
CY  - 1951
PB  - MacMillan Co.
ER  -