International Superphosphate and Compound Manufacturer`s Association <br/><br/>
Phosphorus in Agriculture. No 58-59, 62, 64-68(1971- 1976) 

 - London  International Superphosphate and Compound Manufacturer`s Association  1971 
 - 461p 
<br/><br/>International Superphosphate and Compound Manufacturer`s Association: Phosphorus in Agriculture. No 58-59, 62, 64-68(1971- 1976).  London.  International Superphosphate and Compound Manufacturer`s Association, 1971.--(631.8505INT)   
<br/><br/><br/>ENGLISH 
<br/><br/><label>Dewey Class. No.: </label>631.8505  / PA