TY  - BOOK
AU  - Okumu,Gladys B ...[et al.]
TI  - Secondary biology form four students' book 
SN  - 978-9966-651-68-6
AV  - QH 315 .S43 2017 V.4  
PY  - 2017///
CY  - Nairobi
PB  -  Kenya Literature Bureau
KW  - Biology-Study And Teaching  (Secondary)
ER  -