Categories

• Education,Zoology
• Botany,Physics
• Others,Physics
• geography
• economy
• Economic
• zoolozy
• Politicalscience
• psycholigy
• Physics,History

Authors

• pindyak and rubinfeld
• A.P.
• Melvelle
• Mishra R.K
• C.B
• Camel
• K.K.,bharadwaj
• Trivedi
• Swain.B.B
• P.K.,pani ,P.K.,pani