TY  - GEN
ED  - Gran Bretaña
ED  - Conferencia Internacional del Trabajo
TI  - Safety in the Use of Chemicals at Work Convention 1990 (no.170). Night work Convention 1990 (no. 171). Safety in the use of chemicals at work recommendation 1990 (no. 177). Night work recommendation 1990 (no. 178): : presentation and proposed action by her majesty's Government in the United Kingdom and Northern Ireland
KW  - Trabajo nocturno
KW  - Organización Internacional del Trabajo
KW  - Sanidad laboral
ER  -