Gilbeart H. Collings <br/><br/>
Commercial fertilizers : Their sources and use. Ed 2 

 - 2nd Ed 
 - Philadelphia  P Blakiston`s Son and co Inc  1938 
 - 456p 
<br/><br/>Gilbeart H. Collings: Commercial fertilizers : Their sources and use. Ed 2.  (2nd Ed)  Philadelphia.  P Blakiston`s Son and co Inc, 1938.--(631.8COL)   
<br/><br/><br/>ENGLISH 
<br/><br/><label>Dewey Class. No.: </label>631.8  / COL