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The sensitive period for spoken language is from 7 months to 3 years of age. The Mifei(Miffy) Baby Introduction Early Learning Series Books are specifically designed for children among these ages. They are featured with.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.