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Gr 6–8—Written with a Harvard Medical School consultant, this series discusses drugs in a tone that is appropriately sober yet not alarmist or condescending...
Gr 3–5—This series offers an ideal blend of excellent writing and strong historical and technical information about the materials and methods of art...
Gr 2–5—Created with help from a consultant who is a pediatrician and professor at Harvard Medical School, this series provides a thorough overview of different food groups: where they come from and what role they play in our overall health...