Carboniferous

1975

• The Billefjorden Group of Central and Eastern Spitsbergen

  Svalbard Stratigraphic Series, Carboniferous and Permian Subseries

  Author(s): Wright, N.J.R.

  Report Number: CASP.arc.6

  1975-07

• The Billefjorden Group of Southern Spitsbergen

  Svalbard Stratigraphic Series, Carboniferous and Permian Subseries

  Author(s): Wright, N.J.R.

  Report Number: CASP.arc.7

  1975-06