| LDR | | b n c z d + e + f n g + h +4500 |
| 001 | | a a31371280 |
| 008 | | a 150529n!!aznnnaabn++++++++++!a+aaa++++!+ |
| 010 | | a p 2016271540 |
| 040 | | a WA N c WA N |
| 100 | 1. | a Foerstel, Gertrud d (1880-1950) |
| 400 | 1. | a Förstel, Gertrude |
| 667 | | a osobowe |
| 667 | | a Niemiecka śpiewaczka (sopran). |
| 670 | | a Lied des Hirtenknaben aus "Tannhäuser" / [Richard Wagner. - S.l. ca 1910]. b Wyk. |
| 670 | | a DNB online |