Dear All
You require birth certificate from the Govt office of your place of birth.All, who have applied for visa have obtained this certificate.I myself obtained birth certificate from my birth place city. As I was born before 1975, I was issued a certificate that my name is not in the register maintained by them.
you mean you still need written letter from the birth certificate issuing authority which says that, they don't have your birth certificate and you are free to show any other proof. Intresting.