Crawford, A. E. (1955). Ultrasonic engineering: With particular reference to high power applications. London: Butterworths Scientific Publications.
Παραπομπή Chicago StyleCrawford, Alan E. Ultrasonic Engineering: With Particular Reference to High Power Applications. London: Butterworths Scientific Publications, 1955.
Παραπομπή MLACrawford, Alan E. Ultrasonic Engineering: With Particular Reference to High Power Applications. London: Butterworths Scientific Publications, 1955.
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