Wanijda Areeratchakul. (1999) Opinions of educational administrators, teachers, parents and students in Nontaburi province on the expansion of basic education at secondary schools. Mahidol University,:ม.ป.ท.Wanijda Areeratchakul. 1999. Opinions of educational administrators, teachers, parents and students in Nontaburi province on the expansion of basic education at secondary schools. ม.ป.ท.:Mahidol University,;Wanijda Areeratchakul. Opinions of educational administrators, teachers, parents and students in Nontaburi province on the expansion of basic education at secondary schools. ม.ป.ท.:Mahidol University, 1999. Print.