Categories

• Economics,Political Science
• Others,Education
• zoolozy
• geography
• Others,Physics
• Environmental Studies
• Political Science,Education
• enviromental studies
• History
• Chemistry,odiya

Authors

• Swarup
• K.N,davids, tickoo m.l
• Arora M.G
• Frank
• Narayana
• verma. L.n
• Puri , Babhar
• Acharya , b.m.,Mishra , k.c.
• Das,Das
• shahame