Devorkin, D. H. <br/><br/>
Practical astronomy  lectures on time, place and space 
D H Devorkin                                                
 - Washington  National Air and Space Museum  1986 
 - 109p. 
<br/><br/><label>ISBN: </label>0-87474-359-1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy<br/>Astronomy and Astrophysics Thesaurus
<br/><br/><label>Universal Decimal Class. No.: </label>52  / DEV