COMPARATIVE planetology 
/edited by Cyril Ponnamperuma 
 - New York  Academic Press  1978 
 - ix, 275 p. 
<br/><br/> Includes index.<br/> 
<br/><br/><label>ISBN: </label>125613407 
<br/><br/><label>Dewey Class. No.: </label>521.5  / COM