Coloring books on KDP are not only for kids: Here's what you need to know about them - Book Bolt
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By A Mystery Man Writer
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4.7(765)
Product Description
The supply of coloring books for adults on has exploded. And for good reason. They provide an excellent outlet for stressed and anxious adults to wind down and regroup, all while creating something unique to their personality. A quick search for coloring books for adults on Book Bolt shows that multiple sellers are raking […]