Direct reduction of pyrite cinder to produce sponge iron
| Egile nagusia: | |
|---|---|
| Formatua: | Liburua |
| Hizkuntza: | English |
| Argitaratua: |
Manila
Department of Agriculture and Natural Resources, Bureau of Mines
1963.
|
| Saila: | Report of Investigation No. 50
|
| Gaiak: |