Categories

• Economics,History
• economy
• Philosophy
• Political Science,Zoology
• Chemistry
• Computer Science
• Economic
• psycholigy
• Others,Chemistry
• Logic

Authors

• Pattnaik, k.c.,Pattnaik, k.c.
• p.s. and kothari
• priestley
• S.C.,Patra
• Hilgard
• D.,salvatore,rout and lenka
• B.C,Chatopadhya
• Smart , Willions
• F
• d.r. and others