id	keyword
ajceb-4617	green
ajceb-4617	roof
ajceb-4617	project
ajceb-4617	building
ajceb-4617	life
ajceb-4617	cost
ajceb-4617	performance
ajceb-4617	construction
ajceb-4617	energy
ajceb-4617	design
ajceb-4617	langston
ajceb-4617	study
ajceb-4617	economics
ajceb-4617	case
ajceb-4617	years
ajceb-4617	benefits