| Reference number | NLB/58/249 |
| Alternative reference number | NLB/58 p133 |
| Level | Item |
| Title | Copy letter from Edwin Deller, Assistant Secretary of the Royal Society; to the Secretary of Koninklijk Zoologisch Genootschap; Amsterdam |
| Date | 12 April 1920 |
| Description | Informs the Secretary that No. 19 of their publication, 'Bijfr. Dierk' is missing from the Society's set. Asks the Secretary if they can furnish them with a copy of this. |
| Extent | 1p |
| Format | Carbon |
| Access status | Open |