Kumtapol, Y., Nithiyuwith , T. ., & Treenuntharath, T. . (2022). THE RECOMMENDATION OF HEALTHY TOURISM ROUTES FOR ELDERLY IN KHAOKHO DISTRICT, PHETCHABUN PROVINCE BY USING ANALYTIC HIERARCHY PROCESS . Life Sciences and Environment Journal, 23(2), 521–538. https://doi.org/10.14456/lsej.2022.39