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181by Zeitoun, Mark, Lankford, Bruce, Krueger, Tobias, Forsyth, Tim, Carter, Richard, Hoekstra, Arjen Y., Taylor, Richard, Varis, Olli, Cleaver, Frances, Boelens, Rutgerd, Swatuk, Larry, Tickner, David, Scott, Christopher A., Mirumachi, Naho, Matthews, NathanialSubjects: “...Eco-sociological challenges...”
Published 2016
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191by Rogers, Linda PetersonSubjects: “...life cycle challenges...”
Published 2014
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196Implementation of Natural Sciences and Technology practical activities by novice and expert teachersby Makhubele, PatriciaSubjects: “...Practical activity challenges...”
Published 2017
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