Carolyn Ludwig/ Morris Jackson/ Sherif Sonbol (PHT)
(1)
Gadwat Gabra/ Carolyn Ludwig (EDT)/ Sherif Sonbol (PHT)/ Gertrude Van Loon
(1)
Gawdat Gabra/ Gertrud J. M. Van Loon/ Carolyn Ludwig (EDT)/ Sherif Sonbol (PHT)
(1)
Philip Marsden/ Mary Anne Fitzgerald/ Carolyn Ludwig (EDT)/ Morris Jackson (EDT)
(1)