Download or read book Drifting Continents and Shifting Theories written by Homer Eugene LeGrand and published by Cambridge University Press. This book was released on 1988-12-15 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: A historical account of the triumph of the global theory of plate tectonics and its implications for the "modern revolution in geology" of the 1960s and 1970s after fifty years of controversy and competition.