Hock, Teo Lay
Some Shallow Drilling Equipment Used in the Study of Quaternary Deposite In Malaysia Teo Lay Hock - Draft - Ipoh, Perak Geological Survey Department of Malaysia 1982 - 3p ill, figs plates, photographic 29 cm
Some Shallow Drilling Equipment Used in the Study of Quaternary Deposite In Malaysia Teo Lay Hock - Draft - Ipoh, Perak Geological Survey Department of Malaysia 1982 - 3p ill, figs plates, photographic 29 cm