title: In memoriam: Leszek Filipczynski.
authors.affiliation: Polish Academy of Sciences, Warsaw, Poland.
authors.forename: Andrzej
authors.initials: A
authors.lastname: Nowicki
mesh_terms: D049673:History, 20th Century; D049674:History, 21st Century; D011044:Poland; D014465:Ultrasonics / Q000266:history; D014463:Ultrasonography / Q000266:history