Motion pictures and filmstrips, January-June 1971

by Library of Congress. Copyright Office

MEASURING LENGTHS.

USING CONTROLS. See

EXPERIMENTING.

USING EIGHTH INCHES. See

MEASURING LENGTHS.

USING HALF AND QUARTER INCHES. See

MEASURING LENGTHS.

USING MULTIPLE PULLEYS (Filmstrip) EdMediaTec. 35 fr., color, 35 mm. © EdMediaTec, Inc.; 1May71; JP13226.

USING YARDS AND MILES. See

MEASURING LENGTHS.