00598nam a2200217 k 4500001001300000005001500013008004100028020003000069040001900099049001700118056001100135090001800146100001400164245005900178260003000237300002600267440002400293490000900317653004400326950001000370KMO20250007120250202204940161228s2004 ulk 000 kor  a8970281916g73370:c\6000 a146043c1460430 lJU0000012521 a40024 a400b예75과1 a예종화10a과학의 비밀/d예종화 지음;e이육남 그림 a서울:b글사랑,c2004 a174p.:b삽도;c23cm00a살아있는 과학00v3123 a과학의a비밀a살아있는a과학0 b\6000