Coal mine maps
- ISBN 10 : PURD:32754066164496
- Judul : Coal mine maps
- Pengarang : National Mine Health and Safety Academy,
- Kategori : Technology & Engineering
- Bahasa : en
- Tahun : 1991
- Halaman : 22
- Halaman : 22
- Google Book : http://books.google.co.id/books?id=7RPNWBHcOWYC&dq=intitle:mine+map&hl=&source=gbs_api
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