73044524
Feb 18, 1975
Dec 12, 1978
FILMSTRIPS, MOTION PICTURES, SLIDES, AND AUDIO TAPES, ALL BEING TEACHING AND INSTRUCTIONAL MATERIALS IN THE ART OF WELDING
Electrical and Scientific ApparatusPAMPHLETS, WORKBOOKS, TRAINING MANUALS, ALL BEING TEACHING AND INSTRUCTIONAL MATERIALS IN THE ART OF WELDING
Paper Goods and Printed Matter