559.722
Car
C
 Carnegie Institution of Washington. Dept. of Terrestrial Magnetism 
   Cosmic-ray results... (Ficha 2)

cember 1950, Det Danske Meteorologiske Institut, Geofysis Observatorium [by] Ysabelle Lange [and] S.E. Forbush. Washington, 1957
   v, 224 p. tablas. 28 cm. (Carnegie Institution of Washington. Publication 175)
    A la cabeza del título: ´´Researches of the Department of Terrestrial Magnetism, vol. 20´´