Pastoral economy, property rights and traditional mutual assistance mechanisms among the Ngorongoro and Salei Maasai of Tanzania : draft Author(s) Potkanski, Tomasz
Volcanoes of the south wind : a field guide to the volcanoes and landscape of Tongariro national park Author(s) Williams, Karen
Plan maestro para el establicimiento y manejo del area del Volcan Masaya como parque nacional Author(s) Incer-Barquero, Jaime Gutierrez-Huete, Claudio
