TY  - GEN
AU  - The practical zone system for film and digital Photography
AU  - Chris, Johnson ed.
ED  - 
ED  - 
ED  - 
TI  - The practical zone system for film and digital Photography
U1  - 771 
PY  - 2012///
CY  - Amsterlam
PB  - Elsevier prees
KW  - 
ER  -