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The Essential Earth is a whole new way to open students’ eyes to the physical world around them, to learn how scientists explore it, and what we need to do to

“All of the essential knowledge for completing a successful rammed earth project. Written by a geo-technical engineer with experience ramming earth.” —Kel

The effects of herbs on the human body are set in a lucid and modern context. Simon Mills describes traditional herbal pathology and therapeutics, and also sugg