365 dias : 15 Parques e Reservas Naturais / Alfredo Hervías y Mendizábal
E o que o mundo já foi… : Parque Paleozóico de Valongo / Eugénia Pinto [et al.]
Principal components-like procedures for cross-tabulated recreation data : an illustration from search activity related to park choice / James E. Christensen
Respirar Portugal