Etiqueta de registo: 00267nx a2200109n 45
001 71485
003 http://id.bnportugal.gov.pt/aut/catbnp/71485
095 ## $aPTBN00051361
100 ## $a19920909apory0103 ba
152 ## $aRPC
200 #1 $aAlpern,$bB.
400 #1 $aAlpern,$bBoris$371486
801 #0 $aPT$bBN
810 ## $a<A >progress report on the Alpern Coal Classification
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