00000nz a2200000n 4500 001 KSH2002000013 005 20021113081029 008 020101 n azknn|abn |a a|a | 150 ▼a커뮤니케이션 모델[communication model]▲ 450 ▼wr▼i영어▼acommunication model▲ 550 ▼a커뮤니케이션[communication]▲