00306nam a2200121Ia 4500008004100000100004800041245003900089250000700128260001400135260001800149260000900167300000800176221231s9999    xx            000 0 und d  aGopalakrishna K.R and  Sudhir gopalakrishna 0aElements of mechanical engineering  a30  aBangalore  bSubhas Stores  c2010  a256