Richard L. Welsh
Foundations of orientation and mobility Edited by Richard L. Welsh and Bruce B. Blasch - New York Amercian Foundation for the Blind 1980 - xv,672p.
HB
Includes bibliography and index
eng
152.1882 / FOU
Foundations of orientation and mobility Edited by Richard L. Welsh and Bruce B. Blasch - New York Amercian Foundation for the Blind 1980 - xv,672p.
HB
Includes bibliography and index
eng
152.1882 / FOU