Heck, Arch Oliver 1887- creator text bibliography dcu Washington U.S. G.P.O. 1930 monographic eng

print

vi, 57 p., [1] leaf of plates : ill., forms ; 23 cm. by Arch O. Heck. Bibliography: p. 55-57. Children with disabilities Education United States L111 .A6 1930, no. 11 e 30000315 U.S. Off. of Educ. Library 830201 20260227111220.0 e 30000315