00496nam a2200169Ia 4500 190327s9999||||xx |||||||||||||| ||und|| NITIL NITIL 21st 511 T759T Trachtenberg, Jakow The Trachtenberg speed system of basic mathematics Jakow Trachtenberg London Souvenir Press 1960 270p. Arithmetic; Multiplication Cutter, Ann (Tr.) Meshane, Rudolph (Tr.) BKS 62360 62360 0 0 DDC 0 0 NITIL NITIL 2019-04-04 0 511 T759T 38910 2019-04-04 00:00:00 2019-04-04 BKS 0 0 DDC 0 0 NITIL NITIL 2019-04-04 0 511 T759T 44924 2019-04-04 00:00:00 2019-04-04 BKS