EM : magazine for environmental managers - Air & Waste Management Association (Pittsburgh : Air & Waste Management Association, 1995)
UKM: Dec. (1995)-.Bahan di tempatkan di Koleksi Jurnal Simpan,Bahagian Tebitan Bersiri,paras 3 untuk maklumat lanjut sila hubungi kakitangan bertugas.
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Keywords: Air -- Pollution -- Periodicals; Air quality management -- Periodicals