Massau, Jason John. <br/><br/>
Practical astronomy   
by Jason John Massau. 
 - 2nd 
 - New york  McGraw-Hill Book Company, Inc.  1948 
 - xii, 311p. 
 - McGraw-Hill astronomical series .
<br/><br/><label>Dewey Class. No.: </label>520  / N48