Through the Earth in Forty Minutes
Paul W. Cooper
Citation: American Journal of Physics 34, 68 (1966); doi: 10.1119/1.1972773
View online: https://doi.org/10.1119/1.1972773
View Table of Contents: https://aapt.scitation.org/toc/ajp/34/1
Published by the American Association of Physics Teachers
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