TY  - BOOK
AU  - Sund,Robert B.
AU  - Trowbridge,Leslie W.,jtauthor
TI  - Student -centered teaching in the secondary school
SN  - 0675088461
PY  - 1974///
CY  - Columbus, Ohio
PB  - Merrill
KW  - High school teaching
N1  - Includes bibliographical references; Open access
ER  -