DRUG ABUSE Testimony in trial of Breckenridge dentist Jeffrey Mortenson for alleged drug misuse. RM Ag 3, 1978 p.9 Leading drug business in Boulder discussed, RMN S 31 1978 p.68-69,72 Wyoming. grand jury probe leads to roundup in Colorado, California,, Wyom, Post S 6, 1978 p,1 PoIice crack down on drug dealers' in Civic Center Park, Post 0 31, 1978 p.37 Manager of Aspen radio station,KSNO, David Chamberlain, criticizes quality of investigative reporting in KMGH's special on the Aspen drug problem 19 RMN N &, 1978 p,79