[Report of a study trip to the Research Laboratory for Medical Acoustics in Düsseldorf and the Research Laboratory of Presbyterian University in Philadelphia].
D000162:Acoustics; D005860:Germany, West; D007753:Laboratories; D010414:Pennsylvania; D012106:Research
Zpráva o studijním pobytu ve výzkumné laboratori pro lékarskou akustiku v Düsseldorfu a ve výzkumné laboratori presbyteriánské university ve Philadelphii.