TY  - BOOK
AU  - ZENG Douglas Zhihua
AU  - WORLD BANK
ED  - WORLD BANK
TI  - "Knowledge, technology and cluster-based growth in Africa"
T2  - W B I Learning Resources Series
SN  - 9780821373064
U1  - "X9.6.P, P8/UN" 
PY  - 2008///
CY  - Washington
PB  - World Bank      
ER  -