TY  - BOOK
AU  - Sill,Webster H.
TI  - The plant protection discipline: problems and possible developmental strategies 
SN  - 0470264438
PY  - 1978///
CY  - Osmun & Co., Montclair, N.J.
PB  - Allanheld
KW  - Plants, Protection of
N1  - Bibliography: p. 177-187; Includes indexes
ER  -