Start the information store from August 29 – September 29 2559 1 month by using the query tool onto the backpacks to collect data.building Phetcharat-Suwattana
Start collecting data from August 29 - September 29, 2559 for a period of one month using a questionnaire to collect data packet engine building. Phetcharat-Suwattana
Start date 29 collected data from August to September 29 2559 for 1 months. By using the questionnaire is a tool for data collection.Building Phetcharat-Suwattana.