538.7
Car
M
  Carnegie Institution of Washington. Dept. of Terrestrial Magnetism
    Magnetic results from Watheroo Observatory, Western Australia, 1919-  by H. P. Fleming [and others] Washington, 1947- 
    t. ilus. 28 cm. (Carnegie Institution of Washington. Publication 175)

  A la cabeza del título: ´´Researches of the Departament of Terrestrial Magnetism, vol. 7-A, 7-B