TY  - GEN
AU  - Kilford,W.K.
TI  - Elementary air survey
SN  - 0273010824
U1  - 526.9823 22
PY  - 1979///
CY  - London
PB  - Pitman
KW  - Aerial photogrammetry
KW  - BUEsh
KW  - Reading book
N1  - Includes bibliographical references
ER  -