Asociación Argentina de Filosofía del Derecho (AAFD) is the Argentinian national section of the IVR. It was founded in 1982 in La Plata. Juan Pablo Alonso is the current president of AAFD.
AAFD has its own website at: http://www.aafder.org/
Please see the contact page of AAFD: http://www.aafder.org/contacto/