By Borrego C.   Lemos S.   Carvalho A.C.   Coutinho M.   in International Journal of Environment and Pollution

ISSN:0957-4352|14|1-2|607-615

Inderscience Publishers‎(2000)‎

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By Borrego C.   Martins J.M.   Lemos S.   Guerreiro C.   in International Journal of Environment and Pollution

ISSN:0957-4352|8|3-4|789-795

Inderscience Publishers‎(2009)‎

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