373
D
Douglass , Aubrey Augustus , 1887-
Modern secondary education . Principles and practices . A rev. of " Secondary education ", by Aubrey A. Douglass .... Boston (etc) Houghton Mifflin company (c 1938) 
xviii , 782 p. tablas , diagrs. 20 cm .
(Riverside texbooks in education . Editor : Ellwood P. Cuberley).