BARR, A. S.
Supervision; principles and practices in the improvement of instruction. By A. S. Barr, William H. Burton & Leo J. Brueckner. (Appleton series in supervision and teaching)
BARR, A. S. Supervision; principles and practices in the improvement of instruction. By A. S. Barr, William H. Burton & Leo J. Brueckner. (Appleton series in supervision and teaching) © 24Jun38; A118512. Lillian W. Barr (E), Virginia N. Burton (W) & Leo J. Brueckner (A); 6Aug65; R365771.
Lillian W. Barr|E||Virginia N. Burton|W||Leo J. Brueckner|A