00257nam a2200097Ia 4500008004100000041000800041100001600049245005100065260003500116300000800151211209s1977    xx            000 0 und d  aeng  aKRISHNA M M  aACOUSTIC DELAY LINES AT MICROWAVE FREQUENCIES   aROORKEbUNIVERSITY PRESSc1977  a123