Categories

• Economic
• geography
• Economics,History
• Environmental Studies
• Philosophy
• Chemistry
• Politicalscience
• Education
• Logic
• Others,Chemistry

Authors

• Mishra S.K,Mishra D
• mitra and mohanty,mishra and mohapatra
• raychoudhuri
• Mukharjee, Ghosh
• Samal, mishra and mohanty
• carir cross, a.s.,carir cross, a.s.
• B.K.
• Roy, A.K.
• mishra and jena
• Andrews