00705nam0-22002771i-450-990000004470403321000000447FED01000000447(Aleph)000000447FED0100000044720011111d--------km-y0itay50------baitay-------001yyUltrasonicsBenson Carlin.New YorkMcGraw-Hill book company1949XI, 270 p.ill.23 cmUltrasuoni534.5Carlin,BensonITUNINARICAUNIMARCBK99000000447040332113 B 33 0119213FINBCFINBCUNINAING01