1930
Sumatra Buitenlandsche Bank
Year: 1930
Sumatra Caoutchouc
Year: 1930
Sumatra Caoutchouc Plantagen
Year: 1930
Sumatra Consolidaded Rubber
Year: 1930
Sumatra Electriciteit
Year: 1930
Sumatra Exploratie en Exploitatie
Year: 1930
Sumatra Oliefabrieken
Year: 1930
Sumatra Para Rubber Plantations
Year: 1930
Sumatra Petroleum
Year: 1930
