Weill, F. S. Ultrasound diagnosis of disgetive diseases. Springer.
Lua i Stíl Chicago (17ú heag.)Weill, Francis S. Ultrasound Diagnosis of Disgetive Diseases. Springer.
Lua MLA (8ú heag.)Weill, Francis S. Ultrasound Diagnosis of Disgetive Diseases. Springer.
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