©2013 National Research Council of Thailand
Duangchan Sinpho. 1999. The role of active vocabulary in the development of the reading comprehension of diploma-level technical students. Faculty of Graduate Studies, Mahidol University;
Duangchan Sinpho. (1999) The role of active vocabulary in the development of the reading comprehension of diploma-level technical students . Mahidol University/Bangkok.
Duangchan Sinpho. The role of active vocabulary in the development of the reading comprehension of diploma-level technical students. . Bangkok:Mahidol University, 1999.
Duangchan Sinpho. (1999) The role of active vocabulary in the development of the reading comprehension of diploma-level technical students . Mahidol University/Bangkok.