Laporan PPM R011/2018 : Temporal And Spatial Analysis Of PPM10 Concentration Using Generalized Additive Model (GAM) Approach At Quarry Site, November 2018 Dr. Izhar Abadi b. Ibrahim Rais - Ipoh, Perak Pusat Penyeldikan Mineral, Jabatan Mineral Dan Geosains Malaysia 2018 - 32 p. col., ill, photo 29 cm