Thaheem, Imdadullah. Energy and cost savings by replacing incandescent light bulbs with compact fluorescent lamps / Imdadullah Thaheem, - MUET, Jamshoro : Mechanical Engineering, 2015. - xiv, 67p.: ill. ; 30 cm. Includes References. Subjects--Topical Terms: Energy System Engineering. Dewey Class. No.: / THA