Nouvelle-Guinée (2) Papouasie-Nouvelle Guinée (1) Indonésie (1) Food (1) Seedlings (1) Varieties (1) Breeding (1) Agriculture (1) Altitudes (1) Fiction (1) Uplands (1) Socialites (1) Year (1) Villages (1) Swine (1) Sweet potatoes (1) Social groups (1) Sharing (1) Plants (1) Peasants (1) Peanuts (1) Mountains (1) Interpersonal relations (1) Hypothesis (1) Gardens (1) Farmers (1) Exchange (1) Evidence (1) Ethnic groups (1) Equilibrium (1)