ARMSTRONG, A.K. - Pennsylvanian carbonates, paleoecology, and rugose colonial corals, north flank, eastern Brooks Range, Arctic Alaska.

1972. United States Geological Survey Prof. Paper 747; 21 pp. 15 fig./phot. 8 plts. h.t. Orig. wrps. libr. ticket taped to corner of front cover, 4to.

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