by V. Kourganoff, with the collaboration of I.W. Busbridge. by D. W. van Krevelen, with the collaboration of P. J. Hoftyzer. by Georg Joos ; with the collaboration of IRA M. Freeman. Compiled by J.I. Rodale with the collaboration of Edward J. Fluck. by Georg Joos, with the collaboration of Ira M. Freeman. Sir Hugh Ford ; part IV with the collaboration of J. M. Alexander. Theodore M. Bernstein, with the collaboration of Jane Wagner. R. Creighton Buck, with the collaboration of Ellen F. Buck. William A. Hachten ; with the collaboration of Harva Hachten. Ed. by H. Mark and E. S. Proskauer with the collaboration of P. M. Doty [and others]