Impact of water based drilling mud discharges on t 

 - New York   UN           1985 
 - vii, 50p  cm. 
 - UNEP-Industry and Employment Overview Series .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>GEOGRAPHY
<br/><br/><label>Dewey Class. No.: </label>U:(G:55).73.N8, M5/UN