Polish Academy of Sciences, National Academy of Sciences ; Breymeyer, Alicja I. ; Cowling, Ellis Brevier ; Grodzinski, W. ; Grodzinski, Wladyslaw ; National Academy of Sciences Staff ; Phillips, Anna S. ; Breymeyer, A. I. ; National Academy of Sciences (U.S.) ; Cowling, Ellis B. ; Polish Academy of Sciences ; Polska Akademia Nauk