Robert Spencer/ James Adams (NRT)
(3)
David Alderson (EDT)/ Robert Spencer (EDT)
(2)
Robert (University of Manchester Spencer UK),Anastasia (University of Manchester Valassopoulos UK)
(2)
Robert Fine and Philip Spencer
(2)
Robert Fine/ Philip Spencer
(2)
Robert Kane (EDT)/ Stephanie Halpern (EDT)/ Spencer Seward (EDT)
(2)
Robert Spencer 1884- Cotterill
(2)
Robert Spencer/ Jeff Riggenbach (NRT)
(2)
Spencer Robert 1835-1909 Wigram
(2)
Aaron Helfand;Robert Spencer Barnett
(1)
Andrew Spencer,Robert Henley
(1)
Cameron McCarthy (EDT)/ Heather Greenhalgh-Spencer (EDT)/ Robert Mejia (EDT)
(1)
Cameron McCarthy (EDT)/ Heather Greenhalgh-Spencer (EDT)/ Robert Mejia (EDT)/ Douglas Kellner (FRW)
(1)
Carl-Christoph Schweitzer (EDT)/ Detlev Karsten (EDT)/ Robert Spencer (EDT)/ R. Taylor Cole (EDT)/ Donald P. Kommers (EDT)/ Anthony Nicholls (EDT)
(1)
David Spencer/ Robert Lopez (FRW)/ Jeff Marx (FRW)
(1)