Raymond Firth 
We the Tikopia [PDF ebook] 
A sociological study of kinship in primitive Polynesia

Recognized as a major work when first published, this title has, over the years, become a classic. Forming the basis of modern social anthropology, We the Tikiopia stands in the forefront of its literature.
The book is an excellent example of fieldwork analysis of a primitive society; a complete account of the working of a primitive kinship system; and an exhaustive and sophisticated study of Polynesian social institutions.
First published in 1936.