Categories

• Hindi
• Education,odiya
• Botany,Physics
• Political Science,Zoology
• odiya
• Philosophy
• Others,Physics
• zoolozy
• Others,Chemistry
• geography

Authors

• Ketcham H.
• Jena S.K
• verma and gupta
• Baijal. H.N
• Sharma & Ranganathan
• W.T,Andrews,Lathan J.E.M
• Others,Reddy
• Bhalla.D.
• Stanke, J.G
• Dahl , Stinebnicker