00613nam a2200193Ia 4500003000900000008004100009040001600050080001900066100002600085245005900111260003500170300001600205650002900221650003100250650002100281942000700302999001500309952009500324IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a621.316.8bDUM  aDummer, G. W. A98147 0aVariable resistors and potentiometerscG. W. A. Dummer  aLondonbSir Isaac Pitmanc1956  axiii, 176p.  a Potentiometers 98148  a Resistors-Variable98149  aNASA Thesaurus   cBK  c4613d4613  00104070aBANbKAVcGENd0000-00-00l0o621.316.8/ DUMp5146r2021-11-05w0000-00-00yBK