ISBN:ISSN 0375 3409
The following papers (and one error correction) are published as an online supplement to The Hertfordshire Naturalist 2020 (Transactions of the Hertfordshire Natural History Society, Volume 52, Part 1 pp. 90 – 102).
Edmonds-Brown, R. (2021) Trichoptera of Hertfordshire. Life history tables – a valluable ecological tool.
Helm, C. (2021) The Hertfordshire Barbastelle Project.
Erratum: Gobions Wood: an important site for bryophytes in Hertfordshire.
The papers can be dowloaded here free of charge and will appear, with new page numbering, in The Hertfordshire Naturalist 2021