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100   $a20230207cuuuuuuuu  -u-            -
101 0 $aeng
200 00$aPetroleum and Coal
210   $aBratislava$cSlovnaft VÚRUP a.s
300   $aRefereed/Peer-reviewed
311   $a1337-7027 
531   $aPET. COAL
531   $aPETROLEUM & COAL
906   $aJOURNAL
912   $a9910144038103321
996   $aPetroleum and coal$91943391
997   $aUNINA