Study of geomagnetic cut-off energies and temporal variation of the primary cosmic radiation /
by Frank B. McDonald.

APA Citation

McDonald, F. B. (Frank Bethune)., United States. Office of Naval Research., U.S. Atomic Energy Commission., State University of Iowa. Department of Physics. (1957). Study of geomagnetic cut-off energies and temporal variation of the primary cosmic radiation. Iowa City: Department of Physics, State University of Iowa .

MLA Citation

McDonald, Frank B. (Frank Bethune), United States. Office of Naval Research, U.S. Atomic Energy Commission, and State University of Iowa. Department of Physics. Study of Geomagnetic Cut-off Energies And Temporal Variation of the Primary Cosmic Radiation. Iowa City: Department of Physics, State University of Iowa , 1957.