Blumenfeld, Hans <br/><br/>
Metropolis ... and beyond :  selected essays / 
by Hans Blumenfeld, edited by Paul D. Spreiregen 
 - New York :  John Wiley & Sons,  1979 
 - vii, 420 p. ;  24 cm. 
<br/><br/> An out-of-print edition 
<br/><br/><label>ISBN: </label>0471042811 
<br/><br/><label>LCCN: </label>78-17955