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H.K.J. van der Lely, M.T. Ullman, Past Tense Morphology in Specifically Language Impaired and Normally Developing Children. It provides a balanced selection of research both on traditional topics such as grammatical difficulties and novel approaches such as the interaction between gestures and speech.
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.