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		No cover image available Biological systems,energy sources and biology teaching by Tribe, M \| Pritchard, A.J. Series: Science and technology education document series ; 9 Language: Publication details: UNESCO ; 1984Availability: Items available for reference: Staff Collection (1) . Add to cart (remove)
		No cover image available Ecology,ecosystem management and biology teaching by Spellerberg, I.F \| Pritchard, A.J. Language: Publication details: UNESCO ; 1984Availability: Items available for reference: Staff Collection (1) . Add to cart (remove)
		No cover image available Agriculture and biology teaching by Rao, A.N \| Pritchard, A.J. Series: Science and Technology Education Document Series 11 Language: Publication details: UNESCO Paris ; 1984Availability: Items available for reference: Staff Collection (1) . Add to cart (remove)

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