00857nam0-22002771i-450-99000095135040332120070122151833.092-835-1450-5000095135FED01000095135(Aleph)000095135FED0100009513520001205d1983----km-y0itay50------baengModern HF communicationsNATO Advisory Group for Aerospace Research and Development[S.l.]Agard1983AGARD lecture series127Scienza e guerraNorth Atlantic Treaty Organization.Advisory Group for Aerospace Research and Development18622ITUNINARICAUNIMARCBK9900009513504033211I-06813031FI1FI1Modern HF communications357425UNINA