The Quaternary history of the North Sea
Oele, E.; Schüttenhelm, R.T.E.; Wiggers, A.J. (Ed.) (1979). The Quaternary history of the North Sea. Symposia Universitatis Upsaliensis Annum Quingentesimum Celebrantis, 2. Uppsala University: Uppsala. ISBN 91-554-0495-2. 248, 1 map pp.
Deel van: Symposia Universitatis Upsaliensis Annum Quingentesimum Celebrantis. Uppsala University: Uppsala. ISSN 0346-5462, meer
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