NIOSH current intelligence bulletin : reprints-bulletins 31 thru 47 [boletín]

. no. 31-47 (September, 1986).

National Institute for Occupational Safety and Health (NIOSH)

. (NIOSH current intelligence bulletin; Reprint 31-47). , 1975. (X) Revista

NIOSH current intelligence bulletin : reprints-bulletins 1 thru 18 (1975-1977) [boletín]

. no. 1-18 (rerprints, 1979).

National Institute for Occupational Safety and Health (NIOSH)

. (NIOSH current intelligence bulletin; Reprints 1-18). , 1975 -. (X) Revista