Categories

• geography
• zoolozy
• English
• Others,Education
• Physics,odiya
• Education,Zoology
• Botany
• Zoology
• Others,English
• Physics

Authors

• Chopra, puri and das
• Nayak,B.C
• Bhatnagar ,M.K
• Swain , Rath ,Bal
• Tara
• Mittal , r.l.,A.L.,vohra
• Bimal,Jalan
• Bansal and Harinson
• Tilak Raghukul,M,Nanda, Nanda D.C
• Mishra , s.p.,datt and mahajan