Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Topographical survey active
Projects of Topographical Survey of Federal Dept Mines and Technical Surveys; of Canada land area, only 15% is adequately mapped; in 1949 117,000 sq mi were mapped at 4 mi and 1 mi to the inch; 74 parties including 17 Army teams will survey 150,000 sq mi in 1950; short operating season necessitates aerial photography; Nat Air Photographic Library has assembled 2,000,000 prints of 3,000,000-sq mi area.
Topographical survey active
Projects of Topographical Survey of Federal Dept Mines and Technical Surveys; of Canada land area, only 15% is adequately mapped; in 1949 117,000 sq mi were mapped at 4 mi and 1 mi to the inch; 74 parties including 17 Army teams will survey 150,000 sq mi in 1950; short operating season necessitates aerial photography; Nat Air Photographic Library has assembled 2,000,000 prints of 3,000,000-sq mi area.
Topographical survey active
Can Min J
1950
3 pages
Aufsatz (Zeitschrift)
Englisch
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