Manual of directions, books III, IV, V and VI, types A, B, C, and D.

Manylion Llyfryddiaeth
Prif Awdur:	Gates, Arthur Irving 1890-
Awduron Eraill:	Peardon, Mrs. Celeste (Comegys)
Fformat:	Llyfr
Iaith:	English
Cyhoeddwyd:	New York City Teachers College, Columbia University 1944
Pynciau:	Reading (Elementary). Mental tests.