Titlebook: Urinary Cytology; Phase Contrast Micro Herman J. Voogt,Peter Rathert,Mathilde E. Beyer-Bo Book 19771st edition Springer-Verlag, Berlin · He

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gives the case thickness in an A-scope display. It, however, requires the parts to be immersed in a water tank for acoustic coupling, making on-line inspection inapplicable. Another shortcoming is that the dominant front echo masks the signal from a shallow interface and this technique fails for a t