Salma Alvi Polyethylene Biodegradation In The Presence Of Titania (TiO2) Nanoparticles Salma Alvi - Islamabad IESE (SCEE) NUST 2015. - 53 p. HB. - MS Environmental Science . Thesis MS ES Subjects--Topical Terms: Environmental Science LC Class. No.: 363.7 ALV Dewey Class. No.: 363.7 ALV