TY - BOOK ID - 135073812 TI - The trap dikes of the Lake Champlain region AU - Kemp, James Furman AU - Marsters, Vernon Freeman PY - 1893 PB - Washington U. S. Geological Survey DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:135073812 AB - ER -