00277nam a22001097a 4500082002400000100002100024245001200045246004600057260004300103300000900146650001200155  aRIB.18 629.331bMAJ  aMAJUMDAR (Samir)  aNylon-6  aRubber industry books box. Pocket book.18  aThailandbTechnobiz publicationsc2018  a56p.  aNylon 6