· 12.1) Dragu and All," Tolerante îi Masuratori Tehnice,Editura Didactica ìi Pedagogica 3....
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· 12.1) Dragu and All," Tolerante îi Masuratori Tehnice,Editura Didactica ìi Pedagogica 3. James W. Dally , "Instrumentation for Engineering Measurements" Second Edition Wiley
