Lemon, Roy R  . <br/><br/>
Vanished worlds: an introduction to historical geology /  
by Roy R Lemon. 
 - Oxford :   Wm.C. Brown Publishers ,   1993 
 - xiv, 480p :  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Historical Geology
<br/><br/><label>Dewey Class. No.: </label>Hv  / N3