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Coal miners' pocketbook principles, rules, formulas and tables
- "Handbooks and manuals"
- "Handbooks and manuals"@en
- "Coal miners' pocketbook principles, rules, formulas and tables"@en
- "Coal miners' pocketbook"@en
- "Coal miners' pocketbook, formerly The coal and metal miners' pocketbook; principles, rules, formulas and tables"
- "Coal miners' pocketbook formerly The coal and metal miners' pocketbook; principles, rules, formulas and tables"@en
- "Coal miners' pocketbook : principles, rules, formulas and tables"@en