TY  - BOOK
AU  - Johnson, W. G.
AU  - Gould, H. P.
AU  - Townsend, C. O. 
TI  - Some important insecticides, fungicides and apparatus for their application
CY  - College Park
PB  -  Maryland Agricultural College
KW  - Aspersores  Insecticidas  Fungicidas
ER  -