TY - BOOK AU - Guskey,Thomas R. TI - Implementing mastery learning SN - 0534258727 (pbk. : ak. paper) AV - LB 1031.4 G87I 1997 PY - 1997/// CY - Belmont, Calif. PB - Wadsworth Pub. Co. KW - Mastery learning N1 - Includes bibliographical references (p. 285-297) and indexes ER -