Extract from Colombo Plan Report on airborne magnetometer and scintillation counter survey over parts of Perak, Selangor & Negeri Sembilan [area 1] /
by W. B. Agocs & J.R Paton
- Ipoh : Headquarters of the Geological Survey, 1958
- 1v. (various pagings)
- Economic bulletin ; c-1.1 .