Private Development Corporation of the Philippines. (1973). The synthetic resin industry. s.n.].
Dyfyniad Arddull ChicagoPrivate Development Corporation of the Philippines. The Synthetic Resin Industry. [Makati: s.n.], 1973.
Dyfyniad MLAPrivate Development Corporation of the Philippines. The Synthetic Resin Industry. s.n.], 1973.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.