TY  - BOOK
AU  - Pyenson, L. Louis
TI  - Elements of Plant Protection
U1  - 632.9 
PY  - 1951///
CY  - New York
PB  - John Wiley and Sons Inc.
KW  - Agriculture and related technologies
KW  - Technology (Applied sciences)
KW  - Control
KW  - Plant diseases
ER  -