Fraps, George Stronach. <br/><br/>
Principles of agricultural chemistry 

 - London :  Williams & Norgate,  1917 
 - 501 p.  : ilus. 
<br/><br/><label>LCCN: </label>42424 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Química agrícola.
<br/><br/><label>Dewey Class. No.: </label>630.24  / F73