Code of practice for the safe construction and installation of electric passen-
621.87 .O.733c
Oficina Internacional del Trabajo
Code of practice for the safe construction and installation of electric passen- . -- Ginebra: ILO, 1972. 128 p., 18 cm.
004245
C.I.R.A.
Elevadores.
Industrias - Medidas de seguridad