Categories

• Physics,History
• Others,Chemistry
• Hindi
• economy
• History,odiya
• Botany
• Botany,Physics
• enviromental studies
• evs
• Economics

Authors

• jogindar
• Paul, bharadwaj and walia
• Leckitt
• E,Albert,Neill.Judith O
• Sharma K.N
• Sanala Sahita Soyaa,Pattanaik B
• ray usha
• E,muir,E,muir
• Fraleigh J.B.
• Long, w.j.,D.,lindley