Categories

• Others,English
• Physics,odiya
• Economics,Political Science
• Political Science,Zoology
• Other
• Political Science,Education
• Others,Education
• Hindi
• enviromental studies
• zoolozy

Authors

• m.n.,shiv kumar and bhalla
• Das R.C.
• Dhar
• Delong , Olney
• J.B,Hartee
• Sillie W
• Baumol
• Samal, kulamani
• Vikash
• Pandya ,R.