Air navigation charts V30 (series). 9. Lat. 44° N-60° N. long. 159° W-159° E. Scale 1″=30 naut. m. (1:2,188,800) at lat. 52°30′, contour interval 1,000, 2,000, 3,000, 5,000, 7,000, 9,000, 12,000 and 15,000 ft. Washington, D. C., published May 1943, 4th edition.

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