Ambrosio, M. E. N. The decisive role of Philex Mines in the socio-economic development of Rio Tuba, Benguet.
Lua i Stíl Chicago (17ú heag.)Ambrosio, Ma. Elena N. The Decisive Role of Philex Mines in the Socio-economic Development of Rio Tuba, Benguet.
Lua MLA (9ú heag.)Ambrosio, Ma. Elena N. The Decisive Role of Philex Mines in the Socio-economic Development of Rio Tuba, Benguet.
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