U.S. federal trademark · Serial No. 75257613
printed materials, including handouts, worksheets, flyers, and books; books, including workbooks, activity books, and stories; instructional and teaching materials, including handouts, worksheets, flyers, books, workbooks, activity books, and stories; the subject matter of the printed materials, books, and instructional and teaching materials will generally encompass both instruction and instructional aids regarding nature, ecology, and biology
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