Categories

• Others,Physics
• Logic
• Botany,Zoology
• Hindi
• geography
• Others,Botany
• Education,Zoology
• Others,odiya
• Economics
• History

Authors

• Vashishta , p.c.,Vashishta , p.c.
• Das , B.N
• Jain M.K
• Ray, b.c.,Ray, b.c.
• sandana and malhotra
• Cave
• k.k. and purohit
• Tunner
• Bynne
• Pandey ,B.P