AU  - KASKEL,ALBERT
TI  - PRINCIPLES OF SCIENCE: ACTIVITY CENTERED PROGRAM: TEACHER'S GUIDE,  BOOK 1
T2  - PRINCIPLES OF SCIENCE
SN  - 0675077370
U1  - TR 500.076/KAS 
PY  - 1983///
CY  - OHIO, USA
PB  - CHARLES E. MERRIL. PUBLISHING CO.
KW  - SCIENCE
KW  - TEACHER'S EDITION
KW  - ACTIVITY-CENTERED PROGRAM
ER  -