Não informado. (2004). Environmental & Engineering Geoscience. Association of Engineering Geologists.
Lua i Stíl Chicago (17ú heag.)Não informado. Environmental & Engineering Geoscience. College Station, Tex: Association of Engineering Geologists, 2004.
Lua MLA (8ú heag.)Não informado. Environmental & Engineering Geoscience. Association of Engineering Geologists, 2004.
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