 Well-known geographers from this period are Fred K. Schaefer, Waldo Tobler, William Garrison, Peter Haggett, Richard J. Chorley, William Bunge, and Torsten Hägerstrand.From the 1970s, a number of critiques of the positivism now associated with geography emerged.Known under the term 'critical geography,' these critiques signaled another turning point in the discipline.