Gertrude H. Hildreth, Richard D. Allen, Harold H. Bixler, William L. Connor & Frederick B. Graham.
Metropolitan achievement tests: primary 02 battery: form T and keys and directions for scoring.
R631889. Metropolitan achievement tests: primary 02 battery: form T and keys and directions for scoring. By Gertrude H. Hildreth, Richard D. Allen, Harold H. Bixler, William L. Connor & Frederick B. Graham. © 8Sep48; AA95501. Gertrude Hildreth & Harold H. Bixler (A); 29Mar76; R631889.
Gertrude Hildreth & Harold H. Bixler|A