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Jose Morales,Oscar Castillo,Jose Soriances has been disseminated on a worldwide basis by Plenum Publishing Cor- poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 34 (thesis year 1989) a total of 13,377 theses titles fr978-1-4613-6539-6978-1-4615-3474-7

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2524-8863 s, ecological farms, and travel agencies; (2) ecotourism researchers: scholars and experts, university (specialized) college students, primary and secondary school teachers, and other ecotourism, environmental 978-981-99-9099-3978-981-99-9097-9Series ISSN 2524-8863 Series E-ISSN 2524-8871

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