TY  - BOOK
AU  - Eheart,James
AU  - Dickinson,Jean
TI  - Persistency of Malathion, Parathion, Perthane and Sevin on Selected Vegetable Crops
T2  - Technical Bulletin ; 
PY  - 1962///
CY  - Virginia : 
PB  - Virginia Polytechnic Institute, 
ER  -