George L. Lee/ Helen E. Williams (FRW)
(3)
Bill O'Connell/ Stephen Palmer/ Helen Williams
(2)
David Watson,Helen Williams
(2)
David Watson/ Helen Williams
(2)
Nick (University of Canterbury Draper New Zealand),Craig Williams,Helen Marshall
(2)
Stephen Palmer/ Tim Burton/ Helen Williams
(2)
Alexander Gavin Williams/ Helen Phillipson Fenwick
(1)
Alexander Von Humboldt/ Aime Bonpland/ Helen Maria Williams (TRN)
(1)
Anne Butler/ Helen Williams
(1)
Beatriz Williams/ Lauren Willig/ Karen White/ Helen Sadler (NRT)/ Nicola Barber (NRT)
(1)
David Watson,Helen Williams,Paul Guinness,Garrett Nagle
(1)
David Watson,Paul Hoang,Dave Watson,Helen Williams
(1)
Emily G. Armitage/ Helen L. Kotze/ Kaye J. Williams
(1)
Helen (Northumbria University Williams Newcastle)
(1)
Helen Askell-Williams (EDT)
(1)
Helen Askell-Williams (EDT)/ Janice Orrell (EDT)
(1)