Categories

• Education,Zoology
• Economics
• economy
• Environmental Studies
• Philosophy
• Chemistry
• psycholigy
• Chemistry,odiya
• Political Science,Education
• enviromental studies

Authors

• K.K,Bhatia,K.K,Bhatia
• Parker , Haswell,Prasad, S.N
• Prakash S , Sigh
• Nanda, mohapatra and others
• tyagi and meheta
• Varma, Vedanayagan,Ginod , Rogen
• R.K.,Narayana,Mittal , r.l.
• Das M.N
• Patukale K.
• B.,sing,B.,dharambir