@book{129112,
	author = {Zeng, Douglas Zhihua. and World Bank.},
	title = {Knowledge, technology, and cluster-based growth in Africa},
	publisher = {World Bank,},
	year = {c2008.},
	series = {WBI learning resources series},
	address = {Washington, DC :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10217101}
}