Categories

• Biology,odiya
• evs
• Others,Chemistry
• Zoology
• enviromental studies
• Others,Physics
• Education
• Others,Biology
• Physics,odiya
• Others,History

Authors

• Prasad Devi
• COLLINS, W.
• Prasad L.
• Chaube
• Gangatree Das
• Swain ,A.K.P.C
• h.r.
• Beiser
• B Spain
• Gnover