00000nz a2200000n 4500 001 KSH2001000635 005 20021124000000 008 010108 n azknn|abn |a a|a | 150 ▼a분자 음향학[分子音響學]▲ 450 ▼wr▼i영어▼amolecular acoustics▲ 550 ▼wg▼a음향학[音響學]▲