Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Mining cement gravel at Altar, Mexico
Illustrates and describes old and new methods of recovering gold from cemented gravel in absence of water. (1800 w.) (No. 18334 C)
Mining cement gravel at Altar, Mexico
Illustrates and describes old and new methods of recovering gold from cemented gravel in absence of water. (1800 w.) (No. 18334 C)
Mining cement gravel at Altar, Mexico
Mines Min
1910
Aufsatz (Zeitschrift)
Englisch
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Engineering Index Backfile | 1946
Cement treated gravel pavements
| Engineering Index Backfile | 1956