----------------------------Original message---------------------------- > Peter keller at geog. U. Victoria may be a source. i haven't his address. Peter is now at the geography department, University College Dublin, Ireland. I don't have his e-mail address, but I believe he monitors the GIS-L and/or GEOGRAPH lists. Alternatively, send a message to [log in to unmask] asking for them to put you in touch. The Dublin SysOps are very efficient and obliging.... Darius Bartlett