Philippines. National Science Development Board. (1962). Research and development expenditures of private industry in 1960. [s.n.
Chicago-viite (17. p.)Philippines. National Science Development Board. Research and Development Expenditures of Private Industry in 1960. Manila: [s.n, 1962.
MLA-viite (9. p.)Philippines. National Science Development Board. Research and Development Expenditures of Private Industry in 1960. [s.n, 1962.
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