Foster, Robert J. (Robert John),  1929 <br/><br/>
Historical geology 
Robert J. Foster 
 - New York :  MacMillan,  1991 
 - 374 p. :  ill. ;  23 cm. 
<br/><br/><label>ISBN: </label>067521355X 
<br/><br/><label>LCCN: </label>90-043649 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Historical geology