00339nam a22001217a 4500 2054 2054 20200908135933.0 200908b ||||| |||| 00| 0 eng d 15325 CML Sound and Ultrasonic. Irving, R. London Dennis Dobson 1959 ddc BK 2st Edition 534 IRV 0 0 ddc 0 0 0500 - NAT CML CML NAT 2020-09-08 0 534 IRV 2020-09-08 1 2020-09-08 BK