A world history of rubber: empire, industry, and the everyday

Competition in the synthetic rubber industry

The rubber industry: a study in competition and monopoly

Pemanfaatan karet limbah industri crumb rubber sebagai substitusi karet sir pada pembuatan suku cadang sepeda motor = Utilization of waste rubber crumb rubber industry as a substitute sir rubber motorcycle parts manufacturing

Encyclopedia of asian history : prepared under the auspices of the asia society vol.1-4