004610000a22001330004500003000900000005001700009110005700026245007100083562003900154264009500193300000800288041000800296650002300304PH-MaWHO20241108112148.0 aWorking Group on Mental Retardation (1985 : Manila). aReport [of the] Working Group held in Manila, 18-22 February 1985. a(WP)-MNH/ICP/MND/002.--Unpublished aManila : bWorld Health Organization (WHO) Regional Office for the Western Pacific,c1985. a1v. aeng aMental retardation