Symposium on Sulphur-Containing Fertilizers (1971 : Brussels). <br/><br/>
Symposium on "Sulphur-containing fertilizers" , Brussells, 28th October 1971. 

 - [London :  Sulphur Institute,  1971?]. 
 - 41 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sulphur fertilizers--Congresses.<br/>Sulphur in agriculture--Congresses.