✦ LIBER ✦
Detection of abandoned coal mine workings and underground voids by microgravity : Butler, D Min EngngV41, N4, April 1989, P245–247
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 115 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0148-9062
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