00277nam a2200097Ia 4500008004100000082002100041100002100062245005100083260003700134300000800171140113s9999    xx            000 0 und d  a581.3:582.25   J  a"Maheshwari, P."  aIntroduction to  the Embryology of angiosperms  a1950bMcGraw Hill BookcNew York  a453