Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Sei-ichi EGUCHI and Naoki OKADA and Somkid SIRIPATANADILOK,"Plant Silica Fossils in the Soil from Sakaerat Environmental Research Station, Northeast Thailand","日本大学文理学部自然科学研究所研究紀要 = Proceedings of the Institute of Natural Sciences, Nihon University",03693562,東京 : 日本大学文理学部自然科学研究所,2014,,49,29-33,https://cir.nii.ac.jp/crid/1520572360018059520,