Klaus Beyermann ; translation editor, R.A. Chalmers. O. Budevsky ; translation editors, R. A. Chalmers & M. R. Masson. K. Urbaniec ; translation editor, C. McDermott. editor, M. Kovbacs ; translation editor, T. Waldmeyer. J. Kragten ; translation editor, Mary Masson. Joanna Sadlej ; translation editor, Ian L. Cooper. K. Piszczek and J. Nizio1 ; translation editor, C.F. Beards.