539.722 Car C Carnegie Institution of Washington. Dept. of Terrestrial Magnetism Cosmic-ray results from Huancayo Observatory, Perú, june 1936-december 1946; including summaries from observatories at Cheltenham, Christchurch, and Godhavn trough 1946 [by] Isabelle Lange [and] S.E. Forbush. Washington, 1948 v, 182 p. ilus. 28 cm. (Carnegie Institution of Washington. Publication 175) A la cabeza del título: ´´Researches of the Department of Terrestrial Magnetism, vol. 14´´