The World book encyclopedia of science: The heavens. Vol I 

 - USA,  Scott Fetzer company,  1989, 
 - 158p 
<br/><br/>encycloledia of science 
<br/><br/><br/>англи 
<br/><br/><label>ISBN: </label>0-7166-3212-8 
<br/><br/><label>Subjects--Index Terms: </label>heaven encyclopesya of heaven