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An unusual addition to a baby’s first books and may be particularly useful in a public library setting to see who gravitates toward it; especially recommended for parents interested in immersing their slightly older child in a STEM-related field.
As with Ruth Spiro's Baby Loves Quarks!, the topical reach is well beyond the grasp of even the most precocious young Einsteins, but their parents or older siblings may benefit from these quick refreshers.