"Business cluster#Cluster effect" . . "Cluster" . "geographical clustering" . "Technology Belt" . "fields of business" . "clustering" . "business cluster" . . "ICT Park" . "Business cluster" . "business" . . "Silicon Valley" . "tech cluster" . "Clusters" . "industry cluster" . "Business cluster" . . "tech hub" . "industrial cluster" . . "cluster" . "industrial clusters" . . "local cluster" . "an abundance locally" . "regional clusters" . . "clusters" .