TY  - BOOK
AU  - Hammond,John H.
TI  - The camera obscura: a chronicle 
SN  - 085274451X :
AV  - TR250 .H29 1981
U1  - 681/.4 19
PY  - 1981///
CY  - Bristol
PB  - Hilger
KW  - Camera obscuras
KW  - History
N1  - Includes index; Bibliography: p. 165-178
UR  - http://www.loc.gov/catdir/enhancements/fy0745/82145605-d.html
ER  -