Bok, Bart J. <br/><br/>
Milky way /(by) Bart J. Bok, Priscilla F. Bok.   
by Bart J. Bok, Priscilla F. Bok. 
 - Philadelphia  Blakiston Co.  1941 
 - 204p. 
<br/><br/><label>Dewey Class. No.: </label>523.113  / N41