00284nam a2200109Ia 4500008004100000082001700041100001500058245002500073250000900098260005900107300000800166240913s9999||||xx |||||||||||||| ||und||  a620.5  PRA/N  aT. Pradeep 0aNANO: The Essentials  aNULL  bTata MCGraw Hill Education Private LimitedaNULLc2011  a444