Categories

• Physics,History
• Botany,Physics
• English
• englisg
• Biology
• Political Science,History
• Physics
• enviromental studies
• Botany,Zoology
• geography

Authors

• Pattnaik. A.M.
• G.N,Mahanty
• Kar, K.K.,Acharya , b.m.
• Connor
• Others,Marks
• Singh -Katyal
• c.,bettelhein
• Majumdar, S.
• Chadwal , G.R
• Reed