Isogonic Chart for 1950, United States. Including Isoporic Lines
K-6-3077
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Map/Doc
75921
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Collection
General Map Collection
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Object Dates
1950 (Creation Date)
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People and Organizations
U. S. Coast and Geodetic Survey (Publisher)
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Subjects
United States
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Height x Width
32.2 x 47.2 inches
81.8 x 119.9 cm