Esto, R. (1988). World scientists and inventors, including Filipino scientists and technologists. R.E. Books Marketing.
Chicago-viite (17. p.)Esto, Rey. World Scientists and Inventors, Including Filipino Scientists and Technologists. Valenzuela, Metro Manila: R.E. Books Marketing, 1988.
MLA-viite (9. p.)Esto, Rey. World Scientists and Inventors, Including Filipino Scientists and Technologists. R.E. Books Marketing, 1988.
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