The paper Marta Bunge & Eduardo Dubuc, "Constructive Theory of Galois Toposes" has just been posted in my homepage http://www.math.mcgill.ca/~bunge/current_papers.html/ctgt.ps (dvi) I would also appreciate any communication with me to be through my hotmail address during the next seven months. I shall be visiting Ross Street in Sydney until the end of December 2001. Thank you. Best regards, Marta Bunge E-mail: martabunge@hotmail.com