1. Description of the earth's main magnetic field and its secular change, 1905-1945;Vestine;Carnegie Inst. Wash. Pub. No.,1947
2. The interior of the earth;Bullard,1954
3. Induction effects in terrestrial magnetism. Part I. Theory;Elsasser;Phys. Rev.,1946
4. Induction effects in terrestrial magnetism. Part II. The secular variation.;Bargmann;Phys. Rev.,1946
5. The earth's interior and geomagnetism.;Bargmann;Revs. Mod. Phys.,1950