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The economics of nontimber rainforest products often make a strong case for forest protection and prevention of deforestation. This book contains 33 diverse papers falling into three catagories: tropical rainforests are underutilized sources of new plant products; increased use of tropical forest products should benefit human inhabitants of the rainforest; nontimber forest products many not be the panacea that some suggest.
A Thu, study studied this question.