"Northern West Virginia wage agreement, national bituminous coal wage agreement of 1950 as amended September 29, 1952, amendment effective October 1, 1952."; "Collective labor agreements--Coal mining industry--West Virginia.", "Collective labor agreements--Coal mining industry--United States."; "1952"; "

Pamphlet.

"; ""; "P10572"; "pec"; "Collective labor agreements--Coal mining industry--West Virginia.", "Collective labor agreements--Coal mining industry--United States."; "14256"; .