https://research.manchester.ac.uk/en/publications/la-rationalite-economique-a-lepreuve-du-don-chez-les-papous/
La rationalite economique a l'epreuve du don chez les Papous - Research Explorer The University of...
https://evols.library.manoa.hawaii.edu/items/c92d2dba-743c-4902-86f0-186f062548bf
Carte des Isles de Papous
cartedesisles