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Journal Article The Empty Forest: Many large animals are already ecologically extinct in vast areas of neotropical forest where the vegetation still appears intact Get access Kent H. Redford Kent H. Redford Search for other works by this author on: Oxford Academic Google Scholar BioScience, Volume 42, Issue 6, June 1992, Pages 412–422, https://doi.org/10.2307/1311860 Published: 01 June 1992
Kent H. Redford (Mon,) studied this question.