FRIES, S. (2023) A Chronological Bibliography of Latgalian Printed Texts from the 18th to Early 20th Centuries. Rēzekne, Latvia: Rēzeknes Tehnoloģoju akadēmija. Available at: https://books.rta.lv/index.php/RTA/catalog/book/28 (Accessed: 8 September 2024).