Choudhury, J. R. Higher secondary practical biology/ Jagadindra Ray Choudhury ; Kamal Choudhury and D. P. Barua. - New DElhi: Kalyani Publishers, ©2008. - 224 p. ; ill. : 24 cm. ISBN: 9788127247508 Subjects--Topical Terms: Practical --Biology Dewey Class. No.: 574 / CHO