Drilling wastes :  proceeding of the 1988 international conference on drilling wastes Calgary, Alberta, Canada, 5-8 April / 
edited by F. R. Engelhardt, J. P. Ray and A. H. Gillam 
 - London :  Elsevier Applied Science,  1989 
 - 867 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>1851662782 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Oil well drilling--Environmental aspects--Congresses<br/>Drilling muds--Environmental aspects--Congresses<br/>Oil well drilling--Waste disposal--Congresses