1. user research is to charge, please contact Faculty of environmental and Resource Sciences, Mahidol University, issued the book ask the courtesy to use to perform the collection of queries.
1. Research the agency is asked to contact the Faculty of Environment and Resource Studies. Mahidol University Issue the requested cooperation in implementing the collection of questionnaires.
1. Researchers ask agency is the Faculty of environment and resource studies, Mahidol University. As the issuer may use the courtesy book collecting questionnaires.