Pasaworn Ruangrong. (1999) Efficiency concerning service of the river patrol officers : a specific study of the perception of the river tourists in Kanchanaburi province. Mahidol University,:ม.ป.ท. 10.14457/MU.the.1999.692

Pasaworn Ruangrong. 1999. Efficiency concerning service of the river patrol officers : a specific study of the perception of the river tourists in Kanchanaburi province. ม.ป.ท.:Mahidol University,; 10.14457/MU.the.1999.692

Pasaworn Ruangrong. Efficiency concerning service of the river patrol officers : a specific study of the perception of the river tourists in Kanchanaburi province. ม.ป.ท.:Mahidol University, 1999. Print. 10.14457/MU.the.1999.692