Não informado. (1982). Environmental Research Center Papers. University of Tsukuba, Environmental Research Center.
Chicago-viite (17. p.)Não informado. Environmental Research Center Papers. Ibaraki, Japão: University of Tsukuba, Environmental Research Center, 1982.
MLA-viite (8. p.)Não informado. Environmental Research Center Papers. University of Tsukuba, Environmental Research Center, 1982.
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