author = { KASTENHOLZ, ELISABETH AND RODRIGUES, ÁUREA },

title = { Discussing the Potential Benefits of Hiking Tourism in Portugal },

publisher = {Informa UK Limited},

isbn = {2156-6909},

isbn = {1303-2917},

keywords = { Earth-Surface Processes , Geography, Planning and Development },

year = {2007},

url = { http://slubdd.de/katalog?TN_libero_mab2 }