Changed "Van der Gragt" in: Gragt, Frits van der | ibid. added second Dutch source of HTM LRV nl:GTL8 / Borgdorff ing.D.A. &  Ploeger (LL.M.) mr.Dr.H.D. / The Hague, Netherlands - 2000 / HTV (association) - about Hague articulated tram type GTL8 =>