information about Underground mining (soft rock) field
Field Hierarchy
| Parent | |||
|---|---|---|---|
Chemistry 29.5M papers | Engineering 25.7M papers | Geography 13.4M papers | Organic chemistry 13.2M papers |
History 8.1M papers | Archaeology 7M papers | Waste management 1.6M papers | Coal 293k papers |
Coal mining 95.6k papers | |||
| Current | |||
Underground mining (soft rock) 4,421 papers | |||
| Child | |||
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History