J. R. Gill &amp; W. A. Cobban 1973. Stratigraphy and Geologic History of the Montana Group and Equivalent Rocks, Montana, Wyoming, and North and South Dakota. U.S. Geological Survey Prof. Paper 776. iii+37 pp., 21 figs, 4 tables. Washington. Price U.S. $0.60.

J. M. H.

doi:10.1017/S0016756800045726

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J. R. Gill & W. A. Cobban 1973. Stratigraphy and Geologic History of the Montana Group and Equivalent Rocks, Montana, Wyoming, and North and South Dakota. U.S. Geological Survey Prof. Paper 776. iii+37 pp., 21 figs, 4 tables. Washington. Price U.S. $0.60.

Volume 112, Issue 1
J. M. H.
DOI: https://doi.org/10.1017/S0016756800045726

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J. R. Gill & W. A. Cobban 1973. Stratigraphy and Geologic History of the Montana Group and Equivalent Rocks, Montana, Wyoming, and North and South Dakota. U.S. Geological Survey Prof. Paper 776. iii+37 pp., 21 figs, 4 tables. Washington. Price U.S. $0.60.

Volume 112, Issue 1
J. M. H.
DOI: https://doi.org/10.1017/S0016756800045726

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J. R. Gill & W. A. Cobban 1973. Stratigraphy and Geologic History of the Montana Group and Equivalent Rocks, Montana, Wyoming, and North and South Dakota. U.S. Geological Survey Prof. Paper 776. iii+37 pp., 21 figs, 4 tables. Washington. Price U.S. $0.60.

Volume 112, Issue 1
J. M. H.
DOI: https://doi.org/10.1017/S0016756800045726

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J. R. Gill & W. A. Cobban 1973. Stratigraphy and Geologic History of the Montana Group and Equivalent Rocks, Montana, Wyoming, and North and South Dakota. U.S. Geological Survey Prof. Paper 776. iii+37 pp., 21 figs, 4 tables. Washington. Price U.S. $0.60.

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J. R. Gill & W. A. Cobban 1973. Stratigraphy and Geologic History of the Montana Group and Equivalent Rocks, Montana, Wyoming, and North and South Dakota. U.S. Geological Survey Prof. Paper 776. iii+37 pp., 21 figs, 4 tables. Washington. Price U.S. $0.60.

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