Piroklastik: Perbedaan antara revisi

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<ref>Blatt, Harvey and Robert J. Tracy (1996) ''Petrology: Igneous, Sedimentary, and Metamorphic'', W.H. Freeman & Company; 2nd ed., pp. 26-29; ISBN 0-7167-2438-3</ref>
<ref name=":0">Fisher, R.V., Schmincke, H.-U., 1984. Pyroclastic Rocks. Berlin: Springer-Verlag</ref>
<ref>Warmada, I Wayan, dkk. "Diktat Praktikum Petrologi". Jurusan Teknik Geologi Fakultas Teknik UGM.</ref>
 
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