Occupational health services : fourth item on the agenda. - Geneva : International Labour Office (ILO) , 1985 - 2 vols. : ill. ; 24 cm. - Report / International Labour Conference, 1985 rept. IV . Includes bibliographical references and index. ISBN: 9221037282 Subjects--Topical Terms: Industrial hygiene--Congresses Gov. Doc. Class. No.: UN ILO ILC-71 (85) R-4-1