Schober, Peter. Generadores Hall / Peter Schober. - Barcelona : Marcombo, 1989. - 71 p. : 21 cm. - Enseñanza programada. ; ep 33 . ISBN: 8426707564 3800948400 Subjects--Topical Terms: ELECTROTECNIAGENERADORES HALL Universal Decimal Class. No.: (076.6)621.3