00574cam a22002051 4500 sa 68004286 DLC 20260227112500.0 711020s1967 ii a b 00000 eng sa 68004286 QA11 .S55 510/.072 Sidhu, Kulbir Singh, 1930- The teaching of mathematics. [1st ed.] Delhi, Sterling Publishers [1967] xii, 315 p. illus. 23 cm. Bibliography: p. [314]-315. Mathematics Study and teaching (Secondary) 80101 80101