00633amm a22001931 4500 1/12822 980515s1985 a 9221051250 13269 GR-PeUP 368.41 IN Introduction to working conditions and environment / edit. by J.KClerc. Geneva: International Labour Press, 1985. xx,323 p.: tabl.; 24 cm. Working conditions. Environment. Clerc, J.K. ed. INST UNIPILB MAIN 20040709 368.41 IN 00128888 00128888 LOAN 0 1 /webopac/covers/01/13269_9221051250.jpg