Ojakangas, Richard W. <br/><br/>
The earth  :Past and present 

 - New York  Mc Graw Hills   1976 
 - Mc Graw-Hill earth science paper back series edited by Richard Ojakangas .
<br/><br/><label>Subjects--Index Terms: </label>Earth science  Fossils and the rock  Earths internal processes   Origin of oceans 
<br/><br/><label>Dewey Class. No.: </label>550  / L6