00339nam a2200133Ia 4500008004100000020001800041041000800059082001500067100001800082245003600100250001700136260003200153300002000185220530s9999    xx            000 0 und d  a81-219-1431-0  aeng  a604.2bDHA  aDhawan, R. K.  aTextbook Of Engineering Drawing  a1st. Revised  aNew Delhi bS. Chand c2009  aXII, 660 P.bPB