Heintz, Wulff D. <br/><br/>
Double stars   
by Wulff D. Heintz 
 - Holland  D.Reidel Publishing Company  1978 
 - ix, 174p. 
 - Geophysics and astrophysics monographs  V.15 .
<br/><br/><label>ISBN: </label>902770886X 
<br/><br/><label>Dewey Class. No.: </label>523.841  / N781