TY  - BOOK
AU  -  Langford,Michael John
TI  -  Basic photography : :  a primer for professionals / 
SN  -  0240506170
PY  - 1971///
CY  -  London : 
PB  -  The Focal Press, 
KW  -  Photography
N1  -  Index: p. 371-375
ER  -