Sill, Webster H., Jr. <br/><br/>
The plant protection discipline  : problems and possible developmental strategies 

 - Montclair, N. J. :  Allanheld Osmun,  1978 
 - 190 p. 
<br/><br/><label>LCCN: </label>55396 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Control de plagas.<br/>Fitopatología.
<br/><br/><label>Dewey Class. No.: </label>632  / S5