00336nam a2200121Ia 4500008004100000082001600041100001600057245003700073260003600110300001000146650003400156653002400190170901s2017    xx            000 0 und d  a604.2bD38T  aDhawan, R.K 0aText book of Engineering Drawing  aLudhianabB.D. Kataria and Sons  aMISC.  aTechnology (Applied sciences)  aEngineering drawing