Anion Concentration Distribution and Grav-ity Analysis of Tourism Resources in Qinhuangdao Liujiang National Nature Reserve, National Geological Park
Author(s) -
明洋 廉
Publication year - 2017
Publication title -
sustainable development
Language(s) - English
Resource type - Journals
eISSN - 2160-7540
pISSN - 2160-7559
DOI - 10.12677/sd.2017.74023
Subject(s) - national park , tourism , national nature reserve , distribution (mathematics) , nature reserve , geology , geography , archaeology , mathematics , mathematical analysis
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