Difficulties encountered; present methods of plotting inaccurate; use under special conditions.
Aerial surveying
Mich. Technic
Michigan Technic ; 35 , n 4
1922
2 Figs.
Aufsatz (Zeitschrift)
Englisch
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AERIAL PHOTOGRAPH SURVEYING DEVICE AND AERIAL PHOTOGRAPH SURVEYING METHOD
Europäisches Patentamt | 2018
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