Research theme for competitive and other funds (2):
1988 - 関東平野西縁に分布する鮮新-更新世礫層の堆積環境,関東平野西部の歴史災害
1988 - Sedimentary environment of Pliocene-Pleistocene gravel distributed along western margin of Kanto plain, Historical disasters in western part of Kanto plain
ARAI Kenji. The Chronicles and the Old Maps of Bishado-mura. Bulletin of the Department of Management and Information Science, Jobu University. 2008. 31. 31. 73-87