Motion pictures, January-June 1973

by Library of Congress. Copyright Office

Distilling water. 4 min., si., color, Super 8 mm. Loop film. Appl. au.: Doubleday Multimedia, division of Doubleday and Company, Inc. © Doubleday and Company, Inc.; 23Oct72; MP24259.

MP24260.

Acids and bases. 4 min., si., color, Super 8 mm. Loop film. Appl. au.: Doubleday Multimedia, division of Doubleday and Company, Inc. © Doubleday and Company, Inc.; 26Oct72; MP24260.

MP24261.

Oxygen: preparing and testing. 4 min., si., color, Super 8 mm. Loop film. Appl. au.: Doubleday Multimedia, division of Doubleday and Company, Inc. © Doubleday and Company, Inc.: 7Nov72; MP24261.

MP24262.

Clarifying water. 4 min., si., color, Super 8 mm. Loop film. Appl. au.: Doubleday Multimedia, division of Doubleday and Company, Inc. © Doubleday and Company, Inc.; 1Nov72; MP24262.

MP24263.

Hydrogen: preparing and testing. 2 min., si., color, Super 8 mm. Loop film. Appl. au.: Doubleday Multimedia, division of Doubleday and Company, Inc. © Doubleday and Company, Inc.; 7Nov72; MP24263.

MP24264.