Čhāk yō̜t hūai thưng bun bưng : sitthi ʻamnāt læ rabop kānčhatkān sapphayākō̜n phư̄nbān khō̜ng chumchon chāonā Lumnām Chī =The religious rituals and beliefs as traditional authority for the indigenous system of natural resource management in Isan peasant communities of the Chi River Basin