Glossary of mining geology /

by Amstutz, Gerhard Christian 1922-, Amstutz, Gerhard Christian 1922-
Published 1971

Ores in sediments /

by Amstutz, Gerhard Christian 1922-
Published 1970

Ore genesis, the state of the art : a volume in honour of professor Paul Ramdohr on the occasion of his 90th birthday with special reference to his main scientific interests /

by Ramdohr, Paul n. 1890
Published 1982