Person · 1881 CE – 1938 CEJohannes PoulsenAlso known asЙоханнес Поулсенجوهانس بولسينجوهانس بولسينヨハネス・ポールセンarchival plate · Johannes Poulsen · placeholderThis entry is a stub. The Library is awakening — a longer account is being written.Connected to11 links to entries not yet ingested in the Library.