Bigganer 100 Abiskar
The 100 invention of scientist .
We can on light by press a switch , know what
happen in world sitting in the home.
In hot weather we are stay cool with electric fan .
We can connect with whole world by Internet .
That’s the gift of science .
In this book.
You can know details about science invention .
Every invention have its own history .
How its work its merits and demerits and so many thing about it .
Its written by Shanta shrimani
Total pages 157
Size :7 mb