TY  - BOOK
AU  - Langford, Michael J.
TI  - Professional photography: principles in practice 
T2  - How to do it 
SN  - 0240508432
U1  - 770 
PY  - 1974///
CY  - London 
PB  - The Focal Press 
KW  - Commercial photography
KW  - Photography
KW  - Business methods
N1  - Includes appendix, bibliographical references and index
ER  -