Kolodrubetz, Walter W. (Walter William).
Multiemployer Pension Plans Under Collective Bargaining, Spring 1960 : Bulletin of the United States Bureau of Labor Statistics, No. 1326 ,
Washington, D.C:
G.P.O.,
June 1962, https://fraser.stlouisfed.org/title/4782,
accessed on April 23, 2025.
@FedFRASER