DROSOPHILA GENETICS. See
INTRODUCTION TO BIOLOGICAL CONCEPTS.
DRUG ABUSE: WHO NEEDS IT? (Filmstrip) Marsh Film Enterprises. 51 fr., color, 35 mm. With Suggestions and guides for teaching, 1 v. Appl. states claim extends to 43 original photos; copyright not claimed on 8 photos of the Federal Bureau of Narcotics. © Marsh Film Enterprises; 6Apr70; JP15053.
DRUGS: FRIEND OR FOE? (Filmstrip) Marsh Film Enterprises. 50 fr., color, 35 mm. © Marsh Film Enterprises; 6Apr70; JP12977.
DRUM LATHE OPERATION (Filmstrip) Mt. San Jacinto College. 42 fr., color, 35 mm. (Automotive technology, F-5A) Planned & written by Sheldon Abbott. © Mt. San Jacinto College a.a.d.o. Mt. San Jacinto Junior College District (in notice: Mt. San Jacinto College); 15Dec69; JP12821.
DUKE OF TOMBSTONE. See
DEATH VALLEY DAYS.
DUPLICATING AND COPYING MACHINES. See
INTRODUCTION TO BUSINESS MACHINES.