Categories

• Others,Biology
• Physics,History
• enviromental studies
• Education,Zoology
• Others,Chemistry
• economy
• Others,Botany
• Biology,odiya
• Mathematics
• englisg

Authors

• A.K.
• elwal
• Chakabnavarti
• Kilgour
• Hammond
• Das , g.n.,Das , g.n.
• Ray, R.N.,Das , k.
• l.,komlev
• anantha krishnan,Bhatia, K.K.
• S.A,sethuraman, v.s. and vasudevan