Categories

• Others
• Others,Physics
• Chemistry
• Environmental Studies
• Other
• geography
• Physics
• History
• Ethics and Values
• Biology,odiya

Authors

• Gupta M.G
• Mishra S.C
• k.m. mexmulla,Jha , B.n.
• Gupta, j.s.
• selbin and days,Das , Hota , r.c. mohanty
• K.P
• sandana and malhotra
• Asch
• Bhatnagar
• A.K,Nanda,Das , Chodhury