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42. Notice to aviators no. 10; Oct. 1, 1939.

43. Notice to aviators no. 11; Nov. 1, 1939.

44. Notice to aviators no. 12; Dec. 1, 1939.

45. Notice to aviators no. 1; Jan. 1, 1939.

46. Notice to aviators no. 6; June 1, 1939.

47. Notice to aviators no. 7; July 1, 1939.

49. Notice to aviators no. 9; Sept. 1, 1939.