TY - JOUR DP - http://iris.who.int/ DB - WHO IRIS EP - 521 CY - Geneva PP - Geneva LA - en PB - World Health Organization UR - https://iris.who.int/handle/10665/261363 JF - Bulletin of the World Health Organization DA - 1990 PY - 1990 IS - 4 SP - 515 TI - Control of pneumoconiosisb VL - 68 KW - WHO News and Activities SN - 0042-9686 ER -