Science & Nature Grayscale Adult Coloring Book has original illustrations by Ernst Haeckel. This coloring book contains drawings of wildlife, plants & flowers, bugs, landscapes, science specimen plates, & more. This book can be colored with a wide and colorful variety of pencils and markers. Use bright or muted colors on any of the pictures.
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Science & Nature Grayscale Adult Coloring Book has original illustrations by Ernst Haeckel. This coloring book contains drawings of wildlife, plants & flowers, bugs, landscapes, science specimen plates, & more. This book can be colored with a wide and colorful variety of pencils and markers. Use bright or muted colors on any of the pictures.
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