Gilbeart H. Collings <br/><br/>
Commercial fertilizers : Their sources and use. Ed 5 

 - 5th Ed 
 - New York  Mc Graw Hill Book Co Inc  1955 
 - 617p 
<br/><br/>Gilbeart H. Collings: Commercial fertilizers : Their sources and use. Ed 5.  (5th Ed)  New York.  Mc Graw Hill Book Co Inc, 1955.--(631.8COL)   
<br/><br/><br/>ENGLISH 
<br/><br/><label>Dewey Class. No.: </label>631.8  / COL