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Thomas R. Rybolt has written:
'Environmental experiments about water' -- subject(s): Acid rain, Experiments, Juvenile literature, Pollution, Purification, Water
'Science fair success with scents, aromas, and smells' -- subject(s): Smell, Experiments, Juvenile literature, Senses and sensation, Science projects
'Environmental experiments about land' -- subject(s): Experiments, Juvenile literature, Organic wastes, Recycling (Waste), Recycling (Waste, etc.), Refuse and refuse disposal, Soil erosion, Soils
'Environmental experiments about renewable energy' -- subject(s): Experiments, Juvenile literature, Renewable energy sources
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