TY  - BOOK
AU  - Kilford, W. K.
TI  - Elementary air survey
SN  - 0273252046;9780273010821
U1  - 526.9823 
PY  - 1982///
CY  - London
PB  - Pitman
KW  - Aerial photogrammetry
N1  - Bibliography: p. 321-332
ER  -