David Barker
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Top 50 Reasons to Care about Great Apes: Animals in Peril (Top 50 Reasons to Care about Endangered Animals)
Barker, David
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Save the Planet: Compost It (Language Arts Explorer: Science Lab)
Barker, David
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Archaea: Salt-Lovers, Methane-Makers, Thermophiles, and Other Archaeans (Class of Their Own)
Barker, David M
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E-Waste (Ecological Disasters)
Barker, David M
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Science Lab: Soil (Explorer Library: Language Arts Explorer)
Barker, David M
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Loss of Biodiversity (Essential Issues)
Barker, David M.
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Organic Foods (Growing Green)
Baker, David M.
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