Categories

• Hindi
• Physics
• geography
• Environmental Studies
• Economics,Political Science
• Others,Chemistry
• Political Science,Education
• Political Science,Zoology
• IT
• Education,Zoology

Authors

• Kotpal
• Shakuntala
• B.,Parida,A.,mojanty
• Mishra D.K.
• Barrow
• Singh, h.,Arora,sandhi, and srivastava
• Potten , Goldleg
• Verma , G.
• D.,defoe,Hardy , t.
• Joshi R.B