Leipzig: Akademische Verlagsgesellschaft m. b H. 1931. First Separate Edition. 367-392 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. 34 Koppen-Band III (1931). Stamp of USAF Cambridge Research Center (now defunct). Partial inscription..... More