Maketab Mohamad Identification of possible monitoring sites for ozone as a nearly sign of the development of photochemical oxidant pollution in the Klang Valley / Maketab Mohamad - Kuala Lumpur : Jabatan Alam Sekitar, 1986 - 13 p. Subjects--Topical Terms: Photochemical oxidants--SelangorPhotochemical smog--Selangor