Extract from Colombo Plan Report on airborne magnetometer and scintillation counter survey over parts of Perak, Selangor & Negeri Sembilan [area 1] - Agocs, W. B.; Paton, J. R.; Malaya [Federation]. Department of Geological Survey (Ipoh : Headquarters of the Geological Survey, 1958)
Keywords: Magnetometer; Scintillation counter