id	keyword
fbem-30512	efficiency
fbem-30512	port
fbem-30512	trade
fbem-30512	doi
fbem-30512	vol
fbem-30512	analysis
fbem-30512	lagos
fbem-30512	port efficiency
fbem-30512	infrastructure
fbem-30512	abidjan
fbem-30512	tema
fbem-30512	ecowas
fbem-30512	ccr
fbem-30512	dea
fbem-30512	lomé
fbem-30512	scale
fbem-30512	regional
fbem-30512	bcc
fbem-30512	study
fbem-30512	data