Author talk:Jan Willem Boudewijn Gunning

some more bibliographic background

Gunning & Haagner 1910: (also available as a separate publication by the Government Printing and Stationery Office, Pretoria ? OCLC:69409503^{all editions}) ← check UBUU. -- Dick Bos (talk) 13:00, 7 March 2024 (UTC)