00326cam a2200169   450000500170000024500670001702000050008410000180008904400050010725000050011204100080011730000050012550000050013083000050013526000090014008200070014920260711133817.0  aEl circuito de corriente alternaEnseñanza programada No.29b  a  aRieger, Heinz  a  a  aspa  a  a  v  abc  ab