The Plant Protection Discipline: Problems and possible Developmental Strategies/
Sill, Webster H.
The Plant Protection Discipline: Problems and possible Developmental Strategies/ by Webster H Sill - Montclair, N.J. : Allanheld, Osmun & Co. 1978. - x,190p.
0470264438
Plants, Protection of.
632 / SIL/P
The Plant Protection Discipline: Problems and possible Developmental Strategies/ by Webster H Sill - Montclair, N.J. : Allanheld, Osmun & Co. 1978. - x,190p.
0470264438
Plants, Protection of.
632 / SIL/P