TY - BOOK ID - 145311892 TI - World coalfields : IGCP 166 : Poland - USSR - France - Belgium - Bulgaria - Canada - Japan - Netherlands - USA AU - Rijks Geologische Dienst The Netherlands AU - Geological survey of Belgium PY - 1983 DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:145311892 AB - ER -