sciences de l'eau (1) technologie (1) spectacle (1) satellite (1) roche (1) région (1) radar (1) pays (1) glace (1) hydrologie (1) glacier (1) température de l'air (1) photographie aérienne (1) captage (1) San Cristóbal de La Laguna (1) Showing (1) Forms (1) Balances (Weighing instruments) (1) Nineteen eighties (1) Nineteen fifties (1) Technology (1) Rock glaciers (1) Radar (1) Play (1) Aerial photography (1) Optical radar (1) Mass (1) Landforms (1) Land use (1) Ice (1)