Herbert W Armstrong

Donald D Schroeder  

Now, for the first time, a single all-encompassing concept-called plate tectonics-explains the causes of earthquakes, volcanic activity and other geologic wonders. You need to understand its significance. The earth under our feet is ruled by powerful- but not as yet fully understood-forces. These forces are constantly pushing, tugging, tearing, lifting, suppressing and deforming great slabs of earth. The astounding fact is, terra firma is not firm!

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Plain Truth Magazine

April 1980

Vol 45, No.4

ISSN 0032-0420