TY  - BOOK
AU  - Piper, Terrence J  &  Elgart, Denise B
TI  - Teacher supervision through behavioral objectives: An operationally described system
SN  - 0-933716-03-6
U1  - 371.1472 Pip/Elg 
PY  - 1979///
CY  - Paul h brookes, publishers, Baltimore
ER  -