00301nam a2200109Ia 4500082002400000100006400024245005400088260002600142300001300168500000500181700000500186  a338.476684bUn58.SP  aUnited Nations. Industrial Development Organisation, Vienna  aStudies in plastics fabrication and applicationb  aNew YorkbUNIDOc1969  axi, 88p.  a  a