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Sagada is a community of some 11,000 Igorots, about 3,000 of whom live as close neighbors in the municipal center which is the scene of this study, in Bontoc Sub-Province of the Mountain Province of the Republic of the Philippines. It is situated 5,000 feet above sea level in a small valley just a kilometer from the watershed of the Cordillera Central of northern Luzon (see Map 1). Lying just north
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Eggan et al. (1963) studied this question.
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