Motion pictures and filmstrips, January-June 1972

by Library of Congress. Copyright Office

Cast: Edmond O’Brien, Don Murray, Anne Francis, John Saxon, Edward Andrews.

© Universal City Studios, Inc.; 7Nov70 (in notice: 1967); LP40575.

INVERSE SQUARE LAW. See

LAWS OF SCIENCE.

INVESTIGATING RELATIONSHIPS IN MATTER (Filmstrip) Joseph Mealey & Associates. 4 filmstrips, color, 35 mm. With 4 Teacher’s guides.

Contents: Heat and temperature relationships. 60 fr.--Energy and state relationships. 59 fr.--Weight and mass relationships. 70 fr.--Mass and volume relationships. Appl. ti.: Volume and mass relationships. 59 fr.

Credits: Project director, Dudley G. Davis; graphics, Edward A. De Ville.

© Joseph Mealey & Associates, Inc.; 1Sep71; JP14083.

INVESTIGATING SIMPLE MACHINES (Filmstrip) Coronet Instructional Films. 6 filmstrips, color, 35 mm. With guide, 10 p.

Contents: What they do. 55 fr.--Kinds of levers. 47 fr.--Using levers. 48 fr.--Wheel-and-axle pulley. 49 fr.--Inclined plane family. 51 fr.--How they make work easier. 45 fr.