TY - BOOK AU - Orasri Purakam, TI - Effects of curricular change on mathematical abilities and attitudes of secondary students in Thailand SN - Y910040278 PY - 1977/// CY - Ann Arbor, Mich. PB - University Microfilms International KW - Curriculum change KW - Thailand N1 - Thesis (Ph.D.) - University of Maryland, 1977 ER -