Categories

• Economic
• Others,Chemistry
• Eng
• economy
• geography
• enviromental studies
• psycholigy
• evs
• Hindi
• IT

Authors

• B.C,Theraja
• Sulle Sheib
• vidyarthy r.d.,jordan and verma
• M.S.,nagarajan
• Barik A.
• Das , h.c.
• bhattacharya and nagpaw,P.S,Verma
• Herry, O
• Chipra
• Samal, g.s.,Satpathy, k.c.