Mai H. and Dott R. H. Jr. 1985 A SUBSURFACE STUDY OF THE ST. PETER SANDSTONE IN SOUTHERN AND EASTERN  WISCONSIN Wisconsin Geological Survey Circular #47 4to, in wraps as issued, some external wear, contents good with 26 pp., 14 figures and folding plate in rear pocket that focus on this classic Ordovician age unit known from Michigan to Texas and which is a prominent stratigraphic marker bed, a great aquifer for wells and ground water, and a good source of quartz sand for industrial purposes. Hard to find.  Buyer/highest bidder pays shipping, payments via Ebay preferred. Items shipped within 5 business days from receipt and clearance of payment, tracking will be posted. For more geology paleontology gold silver and other ore mining mineralogy and related geoscience and natural history books bulletins atlases and maps, please browse my other auctions.

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