agard conference proceedings Telecommunications aspects on frequencies between 10 and 100 GHz : papers and discussions presented at the Electromagnetic Wave Propagation Panel Technical Meeting held in Gausdal, … Group specification for quartz crystal units for oscillators : second draft / International Electrotechnical Commission , Technical committee No. 12: Radio-communication Sub-committee 12A: Crystals agard conference proceedings Effects of atmospheric acoustic gravity waves on electromagnetic wave propagation : papers and discussions presented at the Specialist Meeting of the Electromagnetic Wave Propagation Panel … Concentrating dilute aerosols by electrostatic methods / J.F. van der Wal ; uitg. R.V.O./T.N.O. Chemisch Laboratorium efficiency of electrostatic air filters in a SPF rat breeding unit / J.L.F. Gerbrandy, D. van der Waay and H.C. Bartlema