Ahmad,Maaz Effects of Soil pH on Phosphorus Availability and Microbial Population Upon TiO2 Nanoparticles Application Maaz Ahmad - Islamabad IESE (SCEE) NUST 2017. - 70p. H.B - MS Environmental Science . Thesis MS ES Subjects--Topical Terms: Environmental Science Dewey Class. No.: 363.7 AHM