Pennsylvania State University <br/><br/>
Circular Pennsylvania State University. No 511, 524(1914) 

 - Pennsylvania  Pennsylvania State University  1947 
 - 364p 
<br/><br/><br/>ENGLISH 
<br/><br/><label>Subjects--Topical Terms: </label><br/>AGRICULTURE
<br/><br/><label>Dewey Class. No.: </label>630.5  / CPSU