UTGARD RUSSELL O. <br/><br/>
SOURCEBOOK FOR EARTH SCIENCES AND ASTRONOMY 

 - NEWYORK  MACMILLAN COMPANY  1972 
 - X,293 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Earth sciences--Study and teaching (Secondary) Astronomy--Study and teaching (Secondary)
<br/><br/><label>LC Class. No.: </label>REF GB.59.6.U84 1972