Categories

• Hindi
• Botany,Physics
• zoolozy
• Economics,Political Science
• Physics
• Zoology
• geography
• Physics,odiya
• Computer Science
• enviromental studies

Authors

• nicolson, m.h.
• Bhalla.D.
• Ranjan
• M.R.,Anand ,M.R.,Anand
• Sinta
• Dahi
• Tyagi, b.p.,Tyagi, b.p.
• Patri. Matri
• Long
• Nayak, l.