Macdonald, Janet W. <br/><br/>
Investigating the earth  [Books]. 
Miles F. Harris, Dale T. Hesser, J. Allen Hynek ... [et al]. 
 - Boston  Houghton Mifflin Company.  1976 
 - Pages: 529 
<br/><br/><label>ISBN: </label>0395206952  0.00 
<br/><br/><label>Subjects--Personal Names: </label><br/>Earth
<br/><br/><label>Dewey Class. No.: </label>QB/631  / INV