1.
Geology of the Mackay 30-minute quadrangle, Idaho: USGS Open-File Report 70-242
by Willis H. Nelson, Clyde Pol...
ISBN: 9781288887309
List Price: $21.75
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Geology of the Bonner Quadrangle, Montana : Usgs Bulletin 1111-F
by Nelson, Willis H., Dobell, ...
ISBN: 9781289015817
List Price: $17.75
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Geology of the Duck Creek Pass Quadrangle, Montana : Usgs Bulletin 1121-J
by Nelson, Willis H.
ISBN: 9781289055578
List Price: $17.75