Ижил төстэй зүйлс: Black Book - Cardiac Pacing Industry (April 1979)
- Black Book - Cardiac Pacing Industry (November 1976)
- Black Book - Cardiac Pacing Industry (June 1977)
- Black Book - Cardiac Pacing Industry (August 1978)
- Black Book - Surgical Closure Industry (January 1979)
- Black Book - American Hospital Supply Corporation (1979)
- Black Book - Intraocular Lens Industry (April 1979)