620.9 Energetika
| Field | Ind | Field content |
| leader | -----nam a22--------4500 | |
| 1 | sk136908 | |
| 3 | CZ PrNK | |
| 5 | 20180313002701.7 | |
| 8 | 011017|n|annnnaabn n a|a | |
| 40 | ## | $a ABA001 $b cze |
| 190 | $a 620.9 $x Energetika $2 Konspekt $9 19 | |
| 590 | $w g $k 19 $x *Technika, technologie, inženýrství | |
| 790 | $a 620.042 $x Energy engineering $2 Conspectus $9 19 | |
| 906 | $a wp20030728 | |
| 998 | $a 000136908 |