Terrestrial photogrammetric surveys of unstable terrain in Colombia / ..., L. L. Parsley and J. W. F. Dowling
Heath, W.
Terrestrial photogrammetric surveys of unstable terrain in Colombia / ..., L. L. Parsley and J. W. F. Dowling - Crowthorne, Berkshire : Transport and Road Research Laboratory, 1978 - 39, 1 p - Transport and Road Research Laboratory. TRRL Laboratory report ; no. 816 .
Photographic surveying
Aerial photography in road surveying
TE7 R63 no. 816
Terrestrial photogrammetric surveys of unstable terrain in Colombia / ..., L. L. Parsley and J. W. F. Dowling - Crowthorne, Berkshire : Transport and Road Research Laboratory, 1978 - 39, 1 p - Transport and Road Research Laboratory. TRRL Laboratory report ; no. 816 .
Photographic surveying
Aerial photography in road surveying
TE7 R63 no. 816

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