00278nam a2200109Ia 450000500170000000800410001708200140005810000180007224500350009026000350012530000080016020260224040954.0260224s9999||||xx |||||||||||||| ||und||  a581.1 STE  aSteward, F.C. 0aPlant physiology:  A treatise   aNew York: Academic Pressc1953  a599