62 / | HD | REFRIGERATION |
132 | DF | AUTOMATIC CONTROL {19} |
177 | DF | .~ Of external fluid or means {6} |
178 | .~.~ Diverse control or response {2} | |
179 | DF | .~.~.~> Plural external fluids or means controlled |
180 | DF | .~.~.~> External fluid and refrigeration producer {2} |