TY  - BOOK
AU  - Hammock,  Robert C.
AU  - Owings,  Ralph S.
TI  - Supervising Instruction In Secondary Schools
U1  - 373.11 
PY  - 1955///
CY  - Ny
PB  - Mcgraw-hill
KW  - Secondary education
KW  - Secondary School-teaching And Teaching Personnel
ER  -