Motion pictures, January-June 1973

by Library of Congress. Copyright Office

Making our water clean. Troll Associates. Made by the Lunaflick Company, Ltd. 4 min., si., color, Super 8 mm., in cartridge. © Troll Associates; 18Apr73; MP24509.

MP24510.

What pollutes the land and water? Troll Associates. Made by the Lunaflick Company, Ltd. 4 min., si., color, Super 8 mm., in cartridge. © Troll Associates; 18Apr73; MP24510.

MP24511.

What is air pollution? Troll Associates. Made by the Lunaflick Company, Ltd. 4 min., si., color, Super 8 mm., in cartridge. © Troll Associates; 18Apr73; MP24511.

MP24512.

How you can fight pollution. Troll Associates. Made by the Lunaflick Company, Ltd. 4 min., si., color. Super 8 mm., in cartridge. © Troll Associates; 18Apr73; MP24512.

MP24513.

Plant and animal ecology. Troll Associates. Made by the Lunaflick Company, Ltd. 4 min., si., color, Super 8 mm., in cartridge. © Troll Associates; 18Apr73; MP24513.

MP24514.