00308nam a2200109 a 450000500170000000800410001704100080005810000220006624500610008826400380014930000110018720260717072140.0260701s1995    ii            000 0 eng d  aeng1 aRavi varma, K. T.10aConcepts of biology, XII th Science /cRavi varma, K. T. 1aBombay :bUttam Prakashan,c1995.  a510 p.