81st Peripatetic Seminar on Sheaves and Logic University of Coimbra, Portugal April 9-10, 2005 Abstract submission deadline: March 22, 2005 Web page: http://www.mat.uc.pt/~categ/events/pssl.html The organisers, Manuela Sobral Maria Manuel Clementino Jorge Picado Lurdes Sousa 23-Mar-2005 21:52:32 -0400,5344;000000000000-00000000