00672nam0-22002531i-450-99000400294040332120040225114826.0000400294FED01000400294(Aleph)000400294FED0100040029420040109d--------km-y0itay50------baengRadio astronomyPawsey J.L. , Bracewell R.N.OxfordClarendon press1955radiotecnicaPawsey,J.l.151440ITUNINARICAUNIMARCBK99000400294040332100 L15632809DETECDETECRadio astronomy472319UNINA