Categories

• Environmental Studies
• Eng
• Logic
• Others,Biology
• Education,Zoology
• Hindi
• Physics
• Chemistry,odiya
• geography
• History

Authors

• Gupta P.K.
• Panda S.B,Mishra G.C
• Behera, R.C
• Das , M.S,Das , M.S
• Doane
• Jha , Siddequee
• Hamalian , Volpe
• taylor, philip. E
• Das , Nabakishor
• Mishra, B.K.