Categories

• Other
• Others,English
• Political Science,Zoology
• Physics
• Others,Biology
• Political Science,History
• Economics,History
• Mathematics
• enviromental studies
• Botany

Authors

• Murply Roymond
• tyagi and yadav,S.,glasstone
• Chand, soma
• Gupta, S.P,M.C,Vaish
• Dunn
• stock
• Das Srikanta,Mohapatra G.K
• Mishra N.
• Tyagi
• Parker , f.z.w.