TY  - BOOK
AU  - Dempsey Richard A
AU  -  Smith Rodney P
TI  - Differentiated staffing
T2  - Prentice-Hall Series In Curriculum And Teching
SN  - 0132118548
U1  - T2,b.73.N7, L2 
PY  - 1972///
CY  - Englewood
PB  - Cliffs N J Prentice-Hall       
KW  - Secondary Education
N1  - Bib p. 218-30
ER  -