TY - BOOK T1 - Providing for individual differences in student learning :a mastery learning approach / DA - c1984. CY - Springfield, Ill., U.S.A. : AU - Lee, Jackson F. CN - LC1031 .L44 1984 CN - LC1031 PB - C.C. Thomas, PP - Springfield, Ill., U.S.A. : PY - c1984. ID - 102102 KW - Competency based education. KW - Individualized instruction. SN - 0398050287 TI - Providing for individual differences in student learning :a mastery learning approach / ER -