00595nam a2200217 k 4500001001300000005001500013008004100028020001500069020003400084040001900118049002000137056001100157090002100168100001400189245005800203260004000261300001700301490001000318653003800328950001100366KMO20070400020251211135853071122s1997 ulk 000 kor 1 a8985726072 a8985726048(1)g44400:c\5,500 a146043c1460430 lEM0000012669v1 a40424 a404b송68원c11 a송은영10a원리를 알면 과학이 쉽다.n1/d송은영 저 a서울:b도서출판 새날,c1997 a216p.;c23cm00v12479 a원리를a알면a과학a쉽다0 b\5,500