84 / | HD | MUSIC |
453 | DF | ACCESSORIES {6} |
470 R | DF | .~ Teaching devices {4} |
471 R | .~.~ Charts or boards {5} | |
472 | DF | .~.~.~> Easel type |
473 | DF | .~.~.~> With transposing slide |
474 | DF | .~.~.~> With transposing dial |
475 | DF | .~.~.~> For transcribing |
471 SR | DF | .~.~.~> Slide rules |