On board: a learning experience in school board problem solving. National School Boards Association. 22 min., sd., color, 16 mm. © National School Boards Association; 21Nov72; MP24134.

MP24135.

1973 cars: Low speed crash costs, foreign models. Insurance Institute for Highway Safety. 12 min., si., color, 16 mm. © Insurance Institute for Highway Safety; 23Mar73; MP24135.

MP24136.

Refraction, dispersion and resonance. Office of Instructional Media, Rensselaer Polytechnic Institute. 35 min., sd., color, 16 mm. Appl. au.: Alfred Leitner. © Rensselaer Polytechnic Institute & Alfred Leitner; 1Apr73; MP24136.

MP24137.

The Haunted West. National Geographic Society & Wolper Productions, Inc. 51 min., sd., color, 16 mm. © National Geographic Society; 28Nov72; MP24137.

MP24138.

The Divine miracle. Daina Krumins. 5 min., sd., b&w, 16 mm. © Daina Krumins; 2Mar73; MP24138.

MP24139.