RT Journal Article SR Electronic T1 Environmental Health Criteria. 4. Oxides of Nitrogen JF British Journal of Industrial Medicine JO Br J Ind Med FD BMJ Publishing Group Ltd SP 342 OP 342 DO 10.1136/oem.36.4.342 VO 36 IS 4 A1 Steel, J. YR 1979 UL http://oem.bmj.com/content/36/4/342.1.abstract AB