Read Cass 9 science (विज्ञान) full guidebook in English and Nepali for free of cost. You can feel a real science book in your mobile phone. this is totally free-of-cost app for helping Nepali students read books online. from this beautiful application, you can get the below features. - you can enjoy pro-science book features free of cost - easy to use and easy to read - play game in free time - class-9 science book in english and nepali language - any many more features if you face any kind of problem from this app please email us to [email protected] .