TY - BOOK AU - Hart,Cecil Augustus TI - Air photography applied to surveying, AV - TA593 .H3 U1 - 526.91 PY - 1940///] CY - London, New York [etc.] PB - Longmans, Green and co. KW - Photographic surveying KW - Aerial photography N1 - Colored spectacles for use with anaglyphs (pl. i-iv) in pocket; "First published 1940."; Bibliiography: p. 351-356 ER -