Mamoru Nagai
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- Division of Regional Planning Department of Civil Engineering Utsunomiya University. In: 土木学会論文集 (Doboku Gakkai rombunshū), v. 1991, n. 431 (July 1991). (1991):
- A Study On The Trip Survey In The Tourist Destination. In: 土木学会論文集 (Doboku Gakkai rombunshū), v. 1999, n. 625 (July 1999). (1999):