Categories

• Hindi
• Others,Biology
• Physics,History
• economy
• evs
• Political Science,odiya
• Physics
• Others
• Logic
• IT

Authors

• Bansal , r.k. and harrison j.b.
• s.p.,corder,s.p.,corder
• Das B.C
• Haripall
• E
• Purohit,Ranjan, Promod
• Chandra .P
• Soartisk
• Willions
• h.,robbins,h.,robbins