Nuffield Foundation. Science Teaching Project. (1966). Nuffield biology: Introducing living things. Nuffield Foundation.
Chicago-viite (17. p.)Nuffield Foundation. Science Teaching Project. Nuffield Biology: Introducing Living Things. London: Nuffield Foundation, 1966.
MLA-viite (9. p.)Nuffield Foundation. Science Teaching Project. Nuffield Biology: Introducing Living Things. Nuffield Foundation, 1966.
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