Categories

• Hindi
• Physics
• Education
• Zoology,odiya
• Environmental Studies
• History
• Botany,Zoology
• Others,Biology
• Political Science,Zoology
• economy

Authors

• P,Syal,Trivedi R.D
• Pradhan, c.,Mishra , j.r
• and srivastava
• Gwantrey
• mair, j.a.
• Pelezar, Chan , Knieg
• Tiwari, s.p.,Tiwari, s.p.
• dass and verma,mahanta and bhattacharya
• Stephens
• Others,Reddy