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Biological systems,energy sources and biology teaching by Series: Science and technology education document series ; 9
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Publication details: UNESCO ; 1984
Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1).

2.
Agriculture and biology teaching by Series: Science and Technology Education Document Series 11
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Publication details: UNESCO Paris ; 1984
Availability: Items available for reference: National Science Library & Resource Center: Staff collection (1).

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