H. L. Young L. R. Petri and C. H. Prior R. D. Cotter books & textbook
Water Resources In The Vicinity Of Municipalities On The West- Central Mesabi Iron Range Northeastern Minnesota ( Geological Survey Water- Supply Paper 1759- C)
H. L. Young L. R. Petri and C. H. Prior R. D. Cotter
U S Dept of Interior /1965T Paperback
