Mackay, John Watson. <br/><br/>
Sources of information for the literature of geology :  an introductory guide / 
John W. Mackay. 
 - 2nd ed. 
 - Edinburgh :  Scottish Academic Press for the Geological Society of London,  1974. 
<br/><br/>Bibliography: p. 59. 
<br/><br/><label>ISBN: </label> L.1.50 
<br/><br/><label>LCCN: </label>75316934 
<br/><br/><label>Nat. Bib. No.: </label>GB75-07248 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology -- Bibliography.--Geology -- Bibliography.<br/>Geology -- Information services.--Geology -- Information services.
<br/><br/><label>LC Class. No.: </label>QE40  / .M32 1974 
<br/><br/><label>Dewey Class. No.: </label>550/.7