00305nam a2200121Ia 4500008004100000020001500041082001800056100001200074245003400086260003700120300000800157650001800165140316s9999    xx            000 0 und d  a8180521133  a571.2bVER/TE  aVerma,V  aText book of Plant physiology  aNew DelhibAne books Indiac2007  a731  aLife sciences