Categories

• economy
• Education,Zoology
• Botany,Physics
• Zoology,odiya
• enviromental studies
• Physics,History
• Biology,odiya
• englisg
• Physics,odiya
• Chemistry

Authors

• Datt , k.p.m., rudar and sundaram
• Das , Pattanaik,Dutta , Jara
• J.B.,priestley,J.B.,priestley
• Nehru J.L
• Sharma, nanda and das
• Agrawal, J.C
• Nanda, r.r. and ghosh,mishra and mohapatra
• Sharma, p.p.,Gupta, P.K.
• a.n.
• J.,gandhi madan,J.,gandhi madan