Iss karobar se mein kitabe or pushtake banunga jo kissi bhi rup prakar or tarike se banai ja sakti hai.
is karobar ka jagah bahut bada hoga

1. scientific instrument
2. Crop diverse
3. ghar designs
4. minerals, mining, chemicals
5. biotech, biology
6. bharat khajana
7. itihas dinank-bharat, sansar, usa, europe, china
8. model of things-car, pens, jet fighter, bus, tank,
9. Fashion
10. daily needs
11. bharat invaders
12. evolution
13. about viranganaye
14. Space Mission
15. Caste system and society
16. Kamasutra
17. Species
18. Climate challenge about
19. Space vehicles
20. other civilisations
21. Sports-kalaripayattu, badminton, gilli danda, sap sidhi, etc
22. Dance
23. Songs
24. Textiles
25. genocides
26. Holowcast
27. Farming
28. Spies
29. Electronics
30. Electricals
31. Mechanics

Books and encyclopedia in foreign island

1. Jiyan Bhandar
2. Pushtak
3. Bacho ki pushtak