TY  - BOOK
AU  - Boyer,Robert Ernst
AU  - Snyder,P.B.
TI  - Aerial stereo studies: to supplement Hybbard Aerial stereo photographs 
PY  - 1970///
CY  - Northbrook, Ill.
PB  - Hubbard Press
KW  - Aerial photography in geology
KW  - Photography, Aerial
KW  - Photography in geology
KW  - Photography, Stereoscopic
ER  -