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First language - Wikipedia
Mother tongue Definition & Meaning - Merriam-Webster
The Definition of Mother Tongue Plus the World's Top 20
“Mother Tongue” vs. “Native Language” - Difference Explained …
MOTHER TONGUE | English meaning - Cambridge Dictionary
"Mother Tongue" vs. "Native Language" - Difference Explained
Mother Tongue, Defining the Mother Language - Bilingual Kidspot
Mother tongue - Definition, Meaning & Synonyms
Importance and Role of Mother Tongue in Child Development …