TY - BOOK ID - 145665296 TI - Geology of the South Wales Coalfield. AU - Archer, Alan A. AU - Calver, Michael Anthony PY - 1968 PB - London : Her Majesty's Stationery Office, DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:145665296 AB - ER -