00426nam a22001337a 4500003000500000038001000005082001300015100001700028245011900045260003500164300001800199650005400217700002100271NUST  asaima  a004bMCS  aAshraf, Anam  aAnalysis and Design of Requirements and Usability Aspects in Android Applications for Visually Impaired Persons  /  aIslamabad :bMCS - NUST,c2015  a71p. ;c30 cm  aComputer Software Engineering-Analysis and Design  aDr. Sarmad Sadik