TY - BOOK ID - 138254324 TI - Geology of the country around Monmouth and Chepstow : explanation of sheets 233 and 250 AU - Welch, F. B. A. AU - Trotter, F. M. PY - 1960 PB - London Her Majesty's Stationery Office DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:138254324 AB - ER -