Categories

• Economics
• Education,odiya
• Environmental Studies
• Others,Chemistry
• Mathematics
• geography
• Chemistry
• History
• Others,Botany
• Physics

Authors

• Das , Chaudhery,Barrie, James
• sashtri j.
• Roy , Padhy
• parida srinibas,Sahoo, b.d.
• Sarma , g.p.,Sen, k., S., Chopra, p.s. and kothari
• Best , Khan
• Samal, Mishra , Mohanty,subrahmanyam & brijlal
• P.,Pandey
• Desai Kiman
• Agrawal D.D