General knowledge Refresher published this article page no 1 national council of educational research and training (ncert) gratefully acknowledges the valuable contribution of k.r. shivanna professor (retd.) department of botany university of delhi delhi s.k. saidapur professor department of zoology karnataka university dharwad vani brahmachari professor ambedkar centre for biomedical research university of delhi delhi a.n. lahiri majumdar professor bose institute kolkata anil tripathi professor department of biotechnology banaras hindu university varanasi j.l. jain senior physician wus health centre university of delhi delhi in the development of the biology textbook for class xii. ncert is also grateful to k.r. shivanna and t.subramanyam iit kanpur for some of the photographs used in the book general knowledge refresher magazine buy.
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