Categories

• Others,Chemistry
• Chemistry
• Political Science,History
• enviromental studies
• Education
• economy
• Others,Biology
• geography
• Physics,History
• Environmental Studies

Authors

• Krishnaraj
• N,Mahapatra
• R.S,mughali
• Mukharjee, l.
• Panda, h.h.
• Mishra , B.,S.K.,Tuli
• N.K
• Sary M.M.
• glasstone
• Bandopadhya