QAPF図 (Japanese Wikipedia)

Analysis of information sources in references of the Wikipedia article "QAPF図" in Japanese language version.

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See for example the diagram as it appears in Streckeisen, Albert (July 1974). “Classification and nomenclature of plutonic rocks recommendations of the IUGS subcommission on the systematics of Igneous Rocks”. Geologische Rundschau 63 (2): 773-786. doi:10.1007/bf01820841.