TY  - BOOK
AU  - Callahan,Joseph F.
AU  - Clark,Leonard H.
TI  - Teaching In The Middle And Secondary Schools: Planning For Competency 
SN  - 0-02-946039-5
U1  - 373.11 
PY  - 1977///
CY  - New york
PB  - Macmillan Publishing Company
KW  - Education
N1  - Includes Index
ER  -