Lester Thonssen, Mary Margaret Robb & Dorothea Thonssen.
Bibliography of speech education; suppl., 1939-1948.
R676145. Bibliography of speech education; suppl., 1939-1948. By Lester Thonssen, Mary Margaret Robb & Dorothea Thonssen. © 6Jul50; A53753. Lester Thonssen, Mary Margaret Robb & Dorothea Thonssen (A); 2Nov77; R676145.
Lester Thonssen, Mary Margaret Robb & Dorothea Thonssen|A