1In [5] the authors are able to give a method for the construction of a family of partially
balanced incomplete block designs from a special class of wd-nearrings (wd-designs). In this
paper the wd-design incidence matrix and the connected row and column codes are studied.
The parameters of two special classes of wd-designs and those of the related row and column
codes are calculated.openopenA. BENINIBenini, Ann
