00318nam a2200121Ia 4500003000400000005001700004008004100021082001600062100001900078245004900097260003900146300001100185TMU20260720122908.0160921s9999    xx            000 0 und d  a660bC399,T  aChawla, Shashi  aTheory & Practicals of Engineering Chemistry  bDhanpat Rai & Companyc2009aDelhi  aA.15p.