birth certificates

/B ER1 TH S ER0 T IH0 F IH0 K AH0 T S/
noun
  1. 1

    An official document certifying the details of a person's birth. Name, date, and parents' names are always present; details such as parents' occupation and religion may be included.

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Source: https://en.wiktionary.org/wiki/birth%20certificate, https://en.wiktionary.org/wiki/birth%20certificates