Mack, John D. <br/><br/>
Physical geology study guide / 
by John D. Mack. 
 -  c1997. 
 - 246page  28.3cm. 
<br/><br/>I. Geology's subdivisions  --II. Introduction to geology. 
<br/><br/><label>Dewey Class. No.: </label>BCir. 550  / M190p 1997