ISBN 0813723124 books & textbook
Middle Proterozoic to Cambrian Rifting, Central North America (Geological Society of America Special Paper)
Ojakangas, Richard W. Dickas, Albert B. Green, John C.
Geological Society of Amer /1997T Paperback / 322 Pages
isbn-10: 0813723124 / isbn-13: 9780813723129
