Vulnerabilidade das dunas da Ria Formosa / A. Matias... [et al.]

Autor: Matias, A. Coautor: ; Dias, J. M. Alveirinho
Williams, Allan T.
Ferreira, Ó.

Blue Flag or Red Herring: Do beach awards encourage the public to visit beaches? / John McKenna, Allan T. Williams, J. Andrew G. Cooper

Autor: McKenna, John Coautor: ; Williams, Allan T.
Cooper, J. Andrew G.

COTA(S): RE-1193

Litter impacts on scenery and tourism on the Colombian north Caribbean coast / Allan Thomas Williams [et al.]

Resp- Sec.: Williams, Allan T.
Rangel-Buitrago, N.
Anfuso, G.
Cervantes, Omar
Botero, Camilo

COTA(S): RE-1193