This is an outdated version published on 2025-12-17. Read the most recent version. Dr. Birkás János (1934-2025) Authors Péter ENGLER Downloads PDF (Magyar) Published 2025-12-17 Versions 2025-12-18 (2) 2025-12-17 (1) Issue Vol. 77 No. 4 (2025): Geodézia és Kartográfia Section Obituary
