Categories

• Physics,History
• Logic
• Ethics and Values
• Others,Biology
• Other
• Others,Chemistry
• economy
• geography
• pyschology
• Hindi

Authors

• Mishra M.
• J.N,Kapoor
• Sinha , J.N
• Sahu Bhagbaba
• Shiva Sahu
• bahal and bahl,G.,Chatwal
• Fnaleigh, J.B.
• g.f.,zimmer
• Samal, S.,B.,Parida
• kenneth,mackerzie