[The 60th birthday of Oldrĭch Nĕmecek, Ph.D.Ch.E., D.Sc].
D002626:Chemistry, Pharmaceutical / Q000266:history; D003604:Czechoslovakia; D049673:History, 20th Century
K sedesátým narozeninám dr. Ing. Oldricha Nĕmecka, DrSc.