Lua APA (7ú heag.)
ebrary, Inc. (1994). Material fluxes on the surface of the earth. National Academy Press.
Lua i Stíl Chicago (17ú heag.)
ebrary, Inc. Material Fluxes on the Surface of the Earth. Washington, D.C.: National Academy Press, 1994.
Lua MLA (9ú heag.)
ebrary, Inc. Material Fluxes on the Surface of the Earth. National Academy Press, 1994.
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