00357nam a2200121Ia 4500008004100000100000900041245005200050260001700102300000700119942000700126999001500133952008700148201216s9999    xx            000 0 und d  aHMSO 0aCertificates of Competency in the Merchant Navy  aLondonbHMSO  a83  cBK  c6859d6859  00104070aCLd2020-12-16o623.8824023 H6779pPM01943r2020-12-16w2020-12-16yBK