The following bookstores claim to have "System Programming with Modula-3":
m3-request@src.dec.com
Last modified on Mon Sep 25 18:23:56 PDT 1995 by heydon modified on Wed Apr 27 14:55:34 PDT 1994 by kalsow modified on Thu Jan 7 18:40:57 PST 1993 by muller