Leipzig: Akademische Verlagsgesellschaft m. b H. 1930. First Separate Edition. [1], [314]-332 pages. Small 8vo. Buckram binding with original front wrapper bound in. The offprint issue of this paper, originally published in "Gerlands Beitrage zur Geophysik", Bd. 26 (1930). Stamp of USAF Cambridge Research Center (now defunct). Partial inscription from..... More