TY  - BOOK
AU  - Sill, Webster H.
TI  - The Plant protection discipline problems and possible developmental strategies: Webster H. Sill
SN  - 0-470-26443-8.
U1  - 632, 
PY  - 1978///
CY  - Montelair [N.J.] Allanheld
PB  - Osmun and Co.
KW  - Plant protection Plant disease
ER  -