Sill, Webster H.,  1916-, <br/><br/>
The plant protection discipline :  problems and possible developmental strategies / 
by Webster H. Sill, Jr. 
 - Osmun & Co., Montclair, N.J. :  Allanheld,  1978. 
 - x, 190 pages ;  24 cm 
<br/><br/>Bibliography: p. 177-187 Includes indexes 
<br/><br/><label>ISBN: </label>0470264438 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plants, Protection of.