Categories

• enviromental studies
• History
• Philosophy
• geography
• Zoology
• economy
• Chemistry
• Eng
• pyschology
• Political Science,Zoology

Authors

• K.L
• M.R,Kale,M.R,Kale
• M.,kaoung
• Mohanty , G.B,Panda, K.C
• B.S. Gotlfried
• Kar, K.K.
• Ganretl, H.E
• P.S,Bright,Pickons C
• N
• Tomar & Singh