00331nam a2200121Ia 4500008004100000082001700041100001600058245005700074260002200131650001800153650002100171700001700192220204s9999    xx            000 0 und d  a678.6bPAR;1  aAshok Kumar 0aTechnology of synthetic resins and their application  aDelhibSIRIc1983  aPolyurethanes  aSynthetic resins  aPardeepkumar