TY  - BOOK
AU  - Pettus, Alvin M.
AU  - Blosser, Myron E. (jt. auth)
TI  - Teaching science in the block
SN  - 9781930556089
U1  - 507.1273 
PY  - 2001///
CY  - New York
PB  - Eye on Education
KW  - Science-Study and teaching (Secondary)
KW  - Block scheduling (Education)
ER  -