Categories

• Physics
• Economics
• Others,Education
• economy
• Others
• Environmental Studies
• geography
• Economic
• Others,History
• enviromental studies

Authors

• Godavarisha
• Shokla , J.P.
• Mukarji J
• Mishra , S.K.,mishra and mohapatra
• Sudanshan
• Makhepadhyay M.M.
• K.K.,Ghai
• Sharma,Shharma ,Chandra P
• Mohanty , D.
• Pandly