1. | New performance indicators for water management in tourism / Stefan GösslingAutor: Gössling, Stefan COTA(S): RE-1193 | ||
2. | Assessing tourism's global environmental impact 1900–2050 / Stefan Gössling, Paul PeetersAutor: Gössling, Stefan Coautor: ; Peeters, Paul COTA(S): RE-926 |