Pyenson Louis L <br/><br/>
Element of plant protection 
Pyenson Louis L 
 - New York       John Wiley         1951 
 - x,538p.  cm. 
<br/><br/> Appendix 488-492p; Glossary 493-501p 
<br/><br/><label>Standard No.: </label>53148 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Dewey Class. No.: </label>J:4:5, J1-;1