Categories

• Economics,Political Science
• Economics,History
• Physics
• geography
• Hindi
• Botany
• Others,History
• Logic
• Political Science,Zoology
• Chemistry

Authors

• Stevart.H
• Halpern, Alvia
• Bhuyan , d.r.,Nayak, g.d and others
• Phamnah
• maimra and arora
• Piesen , J.M.H
• wessels, w.j.
• Leon
• Bedi Kisan
• Chaini , Ratnakara,bendre and kumar