00527nam a2200181Ia 4500 190327s9999||||xx |||||||||||||| ||und|| 67-14194 NITIL NITIL 21st 373 C593S Clark, Leonard H Secondary school teaching methods Leonard H Clark 2nd New Yotk Macmillan 1967 x, 501p. Teaching-Aids and devices; Education; Instructional systems; Lesson planning Starr, Irving S BKS 59264 59264 0 0 DDC 0 0 NITIL NITIL 2019-04-04 0 373 C593S 58635 2019-04-04 00:00:00 2019-04-04 BKS