Categories

• Education,Zoology
• Education
• enviromental studies
• Economics,Political Science
• Physics
• Economics
• Others,odiya
• Others,English
• Political Science,Education
• Ethics and Values

Authors

• S.K,Gupta,S.K,Singh
• dass and verma,mahanta and bhattacharya
• Tandon, m.p.,S.B.,brown
• R.K,Meher
• j. and patnaik
• Vaasamoorti
• kohali and others
• hansen
• Das,Sharma Nanda ,Rao, Sen , Sukla
• Spens,R.A