http://pec.lib.wvu.edu/record/P18281953Experience under national wage agreements : the bituminous coal and flint glass industries of West Virginia. Journal issue. Issued as: <em>West Virginia Business and Economic Studies</em>, v.2:no.4 (1953:June)Somers, Gerald George.Collective labor agreements--Glass industry--West Virginia.Collective labor agreements--Coal mining industry--West Virginia.14256