Categories

• Ethics and Values
• Others,Chemistry
• Environmental Studies
• enviromental studies
• Botany,Physics
• Mathematics
• economy
• pyschology
• Zoology,odiya
• Economics,History

Authors

• p.c.,vashishtha
• Vashichta
• K.C
• Johri
• L,Kal
• m.n.,shiv kumar and bhalla
• Todaru , Smith
• Bali
• g.m. ,treyelyan,g.m. ,treyelyan
• Mishra L.N