Plumbers and steamfitters. (Occupational briefs on America's major job fields, no. 44)
R653424. Plumbers and steamfitters. By Alice Helen Frankel. (Occupational briefs on America's major job fields, no. 44) NM: completely rewritten. © 8Apr49; AA113289. Science Research Associates, Inc. (PWH); 11Feb77; R653424.
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