Maceda, W. (1971). Biology: The science of living things; laboratory manual and workbook. Felta Book Sales.
Chicago-viite (17. p.)Maceda, Wilfredo. Biology: The Science of Living Things; Laboratory Manual and Workbook. Manila: Felta Book Sales, 1971.
MLA-viite (9. p.)Maceda, Wilfredo. Biology: The Science of Living Things; Laboratory Manual and Workbook. Felta Book Sales, 1971.
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