00305nam a2200097Ia 4500008004100000082002100041100003500062245005100097260005100148300000800199140113s9999    xx            000 0 und d  a581.52(042)   L8  a"Sen, David.N. & Bansal, R.P."  aEnvironmental physiology and ecology of plants  a1978b"Bishen Singh, Mahendra Singh"cDehradun  a486