00470nam a22001817a 4500 OSt 20230921145654.0 230921b ||||| |||| 00| 0 eng d 0 eng 375.511 M49U McSwain, E.T. Understanding and teaching arithmetic in the elementary school : New York : Holt rinehart and winston, 1960 xi, 420p. Cooke, Ralph J. BK 0 0 0 0 RIEBPL RIEBPL 2023-09-21 1 375.511 M49U 2407 2023-10-20 00:00:00 2023-09-21 2023-09-21 BK 44433 44432