Categories

• Mathematics
• Chemistry
• History
• Others,Physics
• enviromental studies
• English
• Physics,odiya
• englisg
• Environmental Studies
• Others,Education

Authors

• j.r.,dyen
• Meher C
• Swain S.N.
• Prasad P.N.G
• P.K.
• R.K,Ratha
• Lechter &Reid
• Kapur.R
• Pattanaik, K,Goodman, W.R
• Henderson