[by] M. Pirani and J. Yarwood. [by] R. M. Whittle and J. Yarwood. by N. Parkin and C. R. Flood. by H. M. Barlow and J. Brown. by M. Platt, and A.F. Carter. by C. L. Dailey and F. C. Wood. by M. H. Atkins and J. F. Lowe. by A. Yariv and J. E. Pearson. Edited by M. Semchyshen and J.J. Harwood. by A. Herzka and J. Pickthall.