00282nam a2200097Ia 450000500170000000800410001710000190005824500540007726000450013130000080017620260413100419.0230516s9999||||xx |||||||||||||| ||und||  aKrishana, M.M. 2aA    Coustic Delay Lines at microwave frequencies  bRorke, Dept.of Elect. &Comm. Engg.c1977  a123