The usefulness of a tactile map before and during travel without sight : its usefulness as enhancement of verbal information provided by an orientation aid /
Bringhammar, Cecilia.
Jansson, Gunnar,1932-
Douglas, G.(Graeme),1968-
University of Birmingham.Research Centre for the Education of the Visually Handicapped.
Birmingham : Research Centre for the Education  of the Visually Handicapped, University of Birmingham,
1997.
Caption title.
"A research report."
"December 1997."