HALIFAX Yellow Pages is apologizing after a coupon was printed in its latest phone book advertising the former denture clinic that once belonged to the killer behind Nova Scotia s mass shooting last April. While the shooter s name doesn t appear in the book, his former business, Atlantic Denture Clinic, is advertised on a coupon offering a 10 per cent discount for dentures. For such a careless mistake to be made and shoved to each of the households of Nova Scotia is nothing short of appalling, said Sandra McCulloch, one of the lawyers representing the victims families. Max Meredith, a resident of West Chezzetcook, discovered the coupon this week. He noticed the same coupon printed in last year s phone book as well but is shocked it ended up in the book again.