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LDR00523namk 00169 k 4500
001000000030042
00520010913133403
008010913s2000 fi 000a eng
020 ▼a 951-802-388-3
049 ▼l WM00004805
056 ▼a 530.25
090 ▼a 530.25 ▼b T675s
1001 ▼a Toppila, Esko
24510 ▼a A Systems Approach to Individual Hearing Conservation / ▼d Esko Toppila
260 ▼a 핀란드: ▼b Finnish Institute of Occupational Health, ▼c 2000
300 ▼a 69p. , ▼c 25cm
44000 ▼a People and Work Research Reports ; ▼v 40