1. BS ISO 4657. Assessment specification of coalbed methane resources. (27th April 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (16 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Assessment specification of coalbed methane resources. (28th February 2022) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (18 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗