007640000a22001930004500 PH-MaWHO 20241108112146.0 EFP/81.21.-Unpublished WPRO File [SOH] World Health Organization. Regional Office for the Western Pacific 643292 Western Pacific Regional Centre for the Promotion of Environmental Planning and Applied Studies (PEPAS) 645966 Air quality monitoring and control Manila : WHO Regional Office for the Western Pacific 1981. 1v. http://iris.wpro.who.int/bitstream/10665.1/1328/3/Air_quality_monitoring_control_eng.pdf eng Environmental health 148422 DOC Mark 13-08-2014 16:00:23 2281 2281 0 0 0 0 WPRO WPRO 2021-05-23 0 WPRO File [SOH] 02281 2024-01-24 00:00:00 2021-05-23 DOC