Instructions for the operation of banka drilling teams prospecting for alluvial gold

Instructions for the operation of banka drilling teams prospecting for alluvial gold PT Riotinto Bethlehem Indonesia Primary Author mixed material bibliography Padang PT Riotinto Bethlehem Indonesia 1974 en English 17 hlm. : ilus; 30 cm + lamp PT Riotinto Bethlehem Indonesia 1974 PT Riotinto Bethlehem Indonesia Operation of Banka Drilling Teams Alluvial Gold 622.3422 PERPUSTAKAAN UNIT GEOMIN PT Aneka Tambang Tbk 622.3422 RIO i 2019100191 My Library 7832 2019-10-10 15:49:22 2019-10-10 15:52:07 machine generated