Marcel Mauss 
Seasonal Variations of the Eskimo [PDF ebook] 
A Study in Social Morphology

Seasonal Variations of the Eskimo is one of the first books in anthropology to adopt a sociological approach to the analysis of a single society. Mauss links elements of anthropology and human geography, arguing that geographical factors should be considered in relation to a social context in all its complexity. The work is an illuminating source on the Eskimo and a proto-type of what an anthropologist should do with ethnographic data and exerted considerable influence on the development of social anthropology. English translation first published in 1979.