Categories

• Physics,History
• English
• enviromental studies
• englisg
• Chemistry
• Others,Political Science
• Mathematics
• Environmental Studies
• Zoology
• Biology,odiya

Authors

• Baju ,D.D.
• Rees
• P,Sykes
• R.,pattanik,S.K.,supkar
• ehawab
• Nanda, b.d.,Nanda, b.d.
• Gupta, r.d.
• Enright & Chickera
• Ray R.N.
• Doygupta