Newsletters on Stratigraphy
Vol. 1, No. 1. Edited by Gerd Lüttig Quarterly. (Brill: Leiden, March 1970.) Hfl 64 per volume.
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GAYER, R. Stratigraphical Journal. Nature 228, 1233 (1970). https://doi.org/10.1038/2281233a0
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DOI: https://doi.org/10.1038/2281233a0