Heller, Robert. L. <br/><br/>
Earth Science  : challenges to science 
Robert. L. Heller. 
 - New York:  McGraw-Hill Book,  1973. 
 - 468p. 
<br/><br/> HB 
<br/><br/><br/>Eng 
<br/><br/><label>ISBN: </label>070280460 
<br/><br/><label>Dewey Class. No.: </label>550  / EAR