Mackay, John Watson <br/><br/>
Sources of information for the literature of geology:  an introductory guide/ 
by John W. Mackay 
 - London:  Geological Society of London,  1973 
 - iv, 61 pages :   ill. ;   30 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Bibliography.<br/>Geology--Information services.