00522nam 2200205 k 4500001001300000005001500013008004100028020003400069040001900103056001100122090001800133100001400151245011900165260003500284300002600319440002000345653005000365950001100415049001200426KMO20210179120210429151224210427s2021 ggka 000a kor  a9788950993016g03410:c\15800 a146043c146043 a41026 a410b최64이1 a최영기10a이런 수학은 처음이야:b읽다 보면 저절로 개념이 잡히는 놀라운 이야기/d최영기 지음 a파주:b21세기북스,c2021 a200p.:b삽도;c20cm00aKI신서;v9458 a수학a처음a수학개념a수학이야기0 b\158000 lEM46277