TY  - BOOK
AU  - Schaaf,Larry J.
TI  - Out of the shadows: Herschel, Talbot and the invention of photography 
SN  - 0300057059
PY  - 1992///
CY  - New Haven, London
PB  - Yale University Press
KW  - Herschel, John,
KW  - Talbot, William Henry Fox,
ER  -