TY - BOOK AU - Jamaludin Othman AU - Wan Zawawie Wan Akill and Khoo Han Peng TI - Geophysical Investigations Of Road Subsidence And/ Or Sinkhole Occurrence On The 17th. & 18th. Km. Sg. Besi - Serdang Road, Selangor Darul Ehsan: Report No: GF 7/92 PY - 1992/// CY - Ipoh PB - Geological Survey Of Malaysia KW - Geophysical Survey KW - microgravity KW - resistivity KW - Selangor KW - Malaysia ER -