TY  - BOOK
AU  - Karaka, James.
TI  - Understanding science. : pupil's book 7
SN  - Understanding science series.
U1  - 507.13 KAR 
PY  - 2005///
CY  - Nairobi. 
PB  -  Longhorn Publishers
KW  - NATURAL SCIENCES & MATHEMATICS
ER  -