KeyBook English Class 9 STB is a solution manual for English Class 9 (Science & General Science Group) students who are following Sindh Text Book Board (Pakistan) textbook in a hope that it will be helpful for them in solving textbook exercise problems. This application is based on Punjab Textbook for class 9 published by the Department of Education, Govt. Of Sindh Karachi Board, Pakistan. A complete text book is hosted in this Application for teaching purpose

Duzz Apps (DA) is dedicated to promotion of affordable education both at schools and college/university levels in Pakistan. Duzz Apps (DA)strives to provide educational support resources in the form of lecture notes, lecture videos, solution manuals and other learning material FREE of Cost & presented in mobile device apps format to supplementary institutional formal education.