Washington: United States Government Printing Office, 1992. softcover, 11" 8.5", 45 pages, plate 1 folded inside rear pocket. from the abstract, "The term bentonite is defined as any natural material composed dominantly of the clay mnerals of the smectitie group and whose properties are controlled by these clay minerals." More
Washington, D. C. U. S. Govt. Print. Off, 1967. First Edition. Paperback. Book Description; Spine has staples. Pages are clean and not marred by notes or folds. Covers are square with wear as noted. Ships Safe and Fast; Geological Survey Bulletin; Vol. 1228; B&W Illustrations; 8vo 8" - 9" tall;..... More
Washington, D. C. U. S. Govt. Print. Off, 1967. First Edition. Paperback. Unmarked. Two plates folded in rear pocket. Mild bumping of some corners. ; Book Description; Spine has no signs of creasing. Pages are clean and not marred by notes or folds. Covers are square with minor wear. Ships..... More
Washington, D. C. U. S. Geological Survey, 1984. First Edition. Paperback. Unmarked. ; Book Description; Spine has staples. Pages are clean and not marred by notes or folds. Covers are square with wear as noted. Ships Safe and Fast. ; U. S. Geological Survey Professional Paper; Vol. 1306; B&W Photographs;..... More