The extraction of potash from silicate rocks.
| Main Author: | |
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| Format: | Government Document Book |
| Language: | English |
| Published: |
[Washington] :
[Govt. print. off.],
1912.
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| Subjects: |
| Item Description: | Bureau of Soils-Circular Number71. |
|---|---|
| Physical Description: | 10 pages including tables. ; 23 cm. |