00306nam a2200109Ia 4500082002400000100006400024245005600088260002600144300001600170500000500186700000500191  a338.476684bUn58.SD  aUnited Nations. Industrial Development Organisation, Vienna  aStudies in the development of plastics industriesb  aNew YorkbUNIDOc1969  aViii, 103p.  a  a