Lau, Ernst <br/><br/>
Equidensitometry  methods of two dimensional photometry, principles and fields of application 
Ernest Lau and Wolfgant Krug 
 - London  The Focal Press  1968 
 - 136p. 
 - The Focal Library .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Microdensitometers<br/>NASA Thesaurus<br/>Optical Measurements<br/>Photography
<br/><br/><label>Universal Decimal Class. No.: </label>77  / LAU