Nygaard, Norman E.  1897-1971. <br/><br/>
A mighty fortress :  biography of Martin Luther / 
by Norman E. Nygaard. 
 - Grand Rapids, Mich. :  Zondervan Pub. House,  c1964. 
 - 159 p. ;  22 cm. 
<br/><br/><label>LCCN: </label>64022836 
<br/><br/><label>Subjects--Personal Names: </label><br/>Luther, Martin, 1483-1546. 
<br/><br/><label>LC Class. No.: </label>BR 325  / .N9