Chaimuang , Nongkran, Sutapat Kongkird, and Jongrak Sricomnoy. 2021. “Strategic Planning for Tourism Development Based on Biological Economy in Coping With the Outbreak of Coronavirus Disease of 2019 (COVID-19)”. PAYAP UNIVERSITY JOURNAL 31 (1):134-50. https://doi.org/10.14456/pyuj.2021.10.