International Chronostratigraphic Chart (Q63462020)
scientific work by the International Commission on Stratigraphy
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(P31) (Q11826511)
(P50) (Q402104)
(P747) (Q131615085)
(Q131170636)
(Q63442938)
(Q63464416)
(Q109340714)
(Q77458991)
(Q18507256)
(Q13464113)
(P856) https://stratigraphy.org/chart
(P921) (Q43521)
(Q134783)
(Q973297)
(P1476) "International Chronostratigraphic Chart" (language: en)
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description scientific work by the International Commission on Stratigraphy