Home › Authors › International Williston Basin Symposium. (5th 1987 Grand Forks, N.D.) 👤 International Williston Basin Symposium. (5th 1987 Grand Forks, N.D.) 1 book Books by International Williston Basin Symposium. (5th 1987 Grand Forks, N.D.) Fifth International Williston Fifth International Williston Basin Symposium 1987