Military education. Army extension courses: subcourse, Map and aerial photograph reading, pt. 2, Aerial photograph reading [1931-32] lesson 3, solutions, corrected to include Changes no. 1 [Jan. 5, 1932].
Publication Title:
Military education. Army extension courses: subcourse, Map and aerial photograph reading, pt. 2, Aerial photograph reading [1931-32] lesson 3, solutions, corrected to include Changes no. 1 [Jan. 5, 1932].
Display Title:
Military education. Army extension courses: subcourse, Map and aerial photograph reading, pt. 2, Aerial photograph reading [1931-32] lesson 3, solutions, corrected to include Changes no. 1 [Jan. 5, 1932].