00289nam a2200109 a 450000500170000000800410001704100080005810000140006624500480008026400400012830000110016820260717072130.0260701s1978    ii            000 0 eng d  aeng1 aVerma, V.12aA textbook of plant physiology /cVerma, V. 1aDelhi :bEmkay publications,c1978.  a563 p.