Campos, P. C., & Velasco, J. R. (1970). Proceedings of the Philippine Association for the Advancement of Science, 1970. Philippine Association for the Advancement of Science.
Lua i Stíl Chicago (17ú heag.)Campos, Paulo C., agus Jose R. Velasco. Proceedings of the Philippine Association for the Advancement of Science, 1970. Manila: Philippine Association for the Advancement of Science, 1970.
Lua MLA (9ú heag.)Campos, Paulo C., agus Jose R. Velasco. Proceedings of the Philippine Association for the Advancement of Science, 1970. Philippine Association for the Advancement of Science, 1970.
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