00645cam a2200229 k 4500001001300000005001500013008004100028020003000069040001900099049001700118056001100135090001800146100001400164245006600178260003600244300003400280490000900314521002100323653004600344700001400390950001100404KMO20070061320251113131951061211s2006 ulka j 000a kor  a8901060590g73400:c\9500 a146043c1460430 lJU0000005062 a40424 a404b전39생1 a전민희10a생각이 통하는 과학/d전민희 저;e오성봉 그림 a서울:b웅진씽크빅,c2006 a175 p.:b색채삽도;c25 cm00v9346 a초등 5~6학년 a과학a생각a힘a사고a원리설명1 a오성봉0 b\9,500