Philippines (Republic). Industrial Development Center & Festin, P. M. (1961). Second survey of the industrial chemicals in the Philippines. [s.n.].
Citace podle Chicago (17th ed.)Philippines (Republic). Industrial Development Center a Purita M. Festin. Second Survey of the Industrial Chemicals in the Philippines. Manila: [s.n.], 1961.
Citace podle MLA (9th ed.)Philippines (Republic). Industrial Development Center a Purita M. Festin. Second Survey of the Industrial Chemicals in the Philippines. [s.n.], 1961.
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