Selangor Dredging Bhd

WORLD MINES REGISTER, 1978-1980.SELANGOR DREDGING BHD LITERATURE.SELANGOR DREDGING BHD 1981 AND 1980 ANNUAL REPORTS.MINING YEARBOOKS, 1967, 1968, 1978, 1980, 1981.INTERNATIONAL DIRECTORY OF MINING, 1980 ENGINEERING ANDMINING JOURNAL.CHENG, HEWITT CHAN AND MORGAN, THE DEVELOPMENT OF A SUITABLEMINING PROPERTY FOR THE OPERATION OF A LARGE CAPACITYDREDG, SELANGOR DREDGING.MINING ANNUAL REVIEW, 1979, 1980.