Categories

• Physics
• Botany,Physics
• Logic
• Education
• History
• Hindi
• Botany,Zoology
• Political Science
• Other
• economy

Authors

• Pari
• R.L,Varshney
• Sharma, nanda and das
• Gorakh
• Seth, m.l.,papola, sachdeva and awasthi
• corden
• freire
• Mohanty , P.K.,pattanaik and das
• Sethi
• Agrawala, s.p., a.n. and singh,Agrawala, s.p., a.n