Langford, Michael John,  1933- <br/><br/>
Professional photography :  principles in practice / 
by Michael J. Langford. 
 - London :  Focal Press,  1974. 
 - 312 p, :  24 p of plates ill(some col), forms ;  25 cm. 
<br/><br/>Bibliography: p.301-304. - Index. 
<br/><br/><label>ISBN: </label>0240508432 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Photography, Commercial.