00555nam a2200205 c 4500001001300000005001500013007000300028008004100031020004200072049001400114052001800128056001500146082001600161245004200177260005000219300002000269650001900289700001900308950002200327KMO20176829720171228112803ta170922s2016    kn            000   kor    a9789946404660z9789946404684:c\105600 lEM684504301a515.732b17-2  a515.7322601a617.75522300a근시와 예방 /d집필: 어순옥  a[평양] :b인민보건사,c2016(주체105)  a127 p. ;c19 cm 8a근시[近視]1 a어순옥4aut1 a구입가b\10560