Waples, Douglas, 1893-1978.
Research methods and teachers' problems : a manual for systematic studies of classroom procedure / by Douglas Waples and Ralph W. Tyler - New York : Macmillan, 1930. - xxiii, 653 p. : ill. ; 21 cm. - Half title: The modern teachers' series, ed. by W. C. Bagley .
Includes bibliographical references and index.
30011735
Teaching.
Research.
LB1025 / .W33
370.78 / WAR
Research methods and teachers' problems : a manual for systematic studies of classroom procedure / by Douglas Waples and Ralph W. Tyler - New York : Macmillan, 1930. - xxiii, 653 p. : ill. ; 21 cm. - Half title: The modern teachers' series, ed. by W. C. Bagley .
Includes bibliographical references and index.
30011735
Teaching.
Research.
LB1025 / .W33
370.78 / WAR