451.		Ecotourism as a tool for environmental education / Héctor Ceballos-Lascurain Autor: Ceballos-Lascurain, Héctor
452.		En busca de un turismo ambientalmente responsable / Margarita Garcia Valdes Autor: Garcia Valdes, Margarita
453.		Can sanctions and rewards explain conformance behaviour of tour operators with ecotourism guidelines ? / Ercan Sirakaya and Muzaffer Uysal Autor: Sirakaya, Ercan Coautor: ; Uysal, Muzaffer
454.		Les clients de la France consomment vert / Maison de la France Col.autor: Maison de la France
455.		Pour un tourisme durable en Méditerranée / Georges Giourgas Autor: Giourgas, Georges
456.		Using interpretation to manage nature-based tourism / Mark B. Orams Autor: Orams, Mark B.
457.		Specialist accommodation and ecologically-sustainable tourism / Gianna Moscardo, Alastair M. Morrison, Philip L. Pearce Autor: Moscardo, Gianna Coautor: ; Morrison, Alastair M. Pearce, Philip L.
458.		Parque Natural de Montesinho : conservação atendendo à economia / Carlos Guerra Autor: Guerra, Carlos
459.		Tourisme : l'indispensable prospective spatiale? / Georges Cazes Autor: Cazes, Georges
460.		Turismo - sector estratégico para Portugal : turismo de ambiente e cultura / Francisco Sampaio Autor: Sampaio, Francisco