Ratcliffe, J. A. The magneto-ionic theory and its applications to the ionosphere : a monograph / J.A. Ratcliffe - Cambridge: University Press, 1959. - x, 206 p. : ill. ; 22 cm. Includes bibliographical references (p. 193-204) and index Subjects--Topical Terms: Magnetoionic theory. Dewey Class. No.: 539.2