Title: Rāingān kānwičhai rư̄ang kānwikhro̜ khunnalaksana læ radap khwāmdaiprīap chœ̄ng khǣngkhan khō̜ng phūprakō̜pkān thurakit khanāt yō̜m nai Čhangwat Phetchaburī
Description: Research report on the competition of medium enterprises in Phetchaburi Province, Central Thailand.