Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Statistical review of domestic mine production, sales of domestic phosphate rock, and stocks; review of industry, by states; imports; exports; consumption of phosphate rock in United States; world production.
Statistical review of domestic mine production, sales of domestic phosphate rock, and stocks; review of industry, by states; imports; exports; consumption of phosphate rock in United States; world production.
Phosphate rock in 1930
U S Bur Mines -- Mineral Resources
Johnson, B.L. (Autor:in)
1932
18 pages
Aufsatz (Zeitschrift)
Englisch
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Online Contents | 1998
| Engineering Index Backfile | 1938
| Engineering Index Backfile | 1930
Rock dust in bituminous-coal mines during 1930-33
| Engineering Index Backfile | 1935
| Engineering Index Backfile | 1938