Law / Official documents procedure in Poland? Family Status, Birth certificate, Marriage certificate [10]

am wanting to obtain a birth certificate fory my grandmother born on February 26 1902 at Rosdzin (Roździeń), Schoppinitz (Szopienice).

And her mother born April 11, 1881 in Oppeln or (Myslowitz, Slaskie, Poland)

Where can I obtain these?