My Winter 1987 edition of the AT&T Computer Software Catalog (Prentice-Hall) lists DBL, a superset of DIBOL, from DISC, 11070 White Rock Rd., Suite 210, Rancho Cordova, CA 95670, (916)635-7300. -- Harvey S. Cohen, AT&T Bell Labs, Lincroft, NJ, mtund!hsc, (201)576-3302