Graphic representation and nomenclature of the four-dimensional crystal classes. III. A notation for the crystal classes: erratum

A printers error is corrected in Table 2 on page 407 of Whittaker [Acta Cryst. (1984), A40, 404-407]. The correct lines are: Family XVII; wx/yzw[0111]*w[0110]/z[010]: wx[0110].