Ley, Willy, 1906-1969. <br/><br/>
Impian insinjur 
Willy Ley terdjemahan Anwar Bey 
 - Djakarta  P.T. Pembangunan  1964 
 - 224 p. : ill. ; 20 cm. 
<br/><br/> judul asal Engineers' dreams 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Engineering--History