TY - BOOK ID - 138351648 TI - The Stratigraphical Position of the Nubian Series : Abstract. Rep. 18th. Sess. Int. Geol. Congr. Britain 1948. PY - 1951 PB - London s.n. DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:138351648 AB - ER -