Three farming communities around the moorland. Aspects of population, economy and social conditions in Valle, Suldal and Hjelmeland in the period 1800-1900 [moorland summer farms, outlying fields]

agricultura agriculture altiplanos animal production cambio social changement social comunidades rurales desarrollo de recursos dynamique des populations economic development escandinavia europa europe exode rural exploitation des ressources histoire historia history human population lande meat production moors natural resources noruega norway physiographic features population population change population dynamics population humaine production production animale production de viande recursos recursos naturales resource development resource exploitation resources ressource ressource naturelle rural communities scandinavia scandinavie social change