těžba methanu
| Field | Ind | Field content |
| leader | -----cz a22--------4500 | |
| 1 | ph159650 | |
| 3 | CZ-OsVSB | |
| 5 | 20210822064914.4 | |
| 8 | 021114|n|anznnbabn n a|a | |
| 40 | ## | $a ABA001 $b cze $d ABA001 |
| 72 | #7 | $a 622 $x Hornictví $2 Konspekt $9 19 |
| 80 | $a 622.324.5 $2 MRF_2003 | |
| 150 | $a těžba methanu $7 ph159650 | |
| 550 | $a methan $7 ph122774 | |
| 550 | $w g $a těžba nerostných surovin $7 ph126840 | |
| 750 | $a methane mining $2 eczenas | |
| 906 | $a wu20021115 $b napo | |
| 906 | $a wz20050318 $b napo | |
| 998 | $a 000159650 |