00000nz a2200000n 4500 001 KSH2002029831 005 20021031005445 008 021031 n azknn|abn |a a|a | 150 ▼a예방 교육[豫防敎育]▲ 450 ▼wr▼i영어▼aPreventive System▲ 450 ▼wr▼i영어▼aprevention training ▲ 550 ▼wg▼a교육[敎育]▲ 550 ▼a예방(막음)[豫防]▲