Agocs, W. B. Airborne magnetometer and scintillation counter survey overparts of Johore & Pahang [area 4] / by W. B. Agocs - Ipoh : Duplicated at the Headquarters of the Geological Survey, 1960 - Economic bulletin; 1.4 . Subjects--Topical Terms: Aeromagnetic prospecting scintillation counters, Geology--Johor