Categories

• Others,Chemistry
• Mathematics
• IT
• Philosophy
• Economics
• Zoology,odiya
• geography
• psycholigy
• Others,Botany
• Others,English

Authors

• Das , S.N
• B.K.
• Lipschutz, Seymour
• NDR
• Gudling
• M.S.,qureshi,chakrabarti, rao and others
• Jana
• Sharma, Garkhd
• stigler
• sharma and kalia