Secrétariat Herstal
Avenue F. Ferrer 26, 4040 Herstal
04 248 85 87
herstal@ptb.be
Secrétariat national
M. Lemonnierlaan 171, 1000 Brussel
02 504 01 10
ptb@ptb.be
Avenue F. Ferrer 26, 4040 Herstal
04 248 85 87
herstal@ptb.be
M. Lemonnierlaan 171, 1000 Brussel
02 504 01 10
ptb@ptb.be