Prasit Ruangjuntra. 1990. survey of teachers' opinions on technical English book I and their basic understanding of the communication approachPrasit Ruangjuntra. Faculty of Graduate Studies, Mahidol University;
Prasit Ruangjuntra. (1990) survey of teachers' opinions on technical English book I and their basic understanding of the communication approachPrasit Ruangjuntra . Mahidol University/Bangkok.