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4Published 1913Subjects: “…[Strikes., Plumbers.]…”
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6by Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)
Published 1953-10-20T00:00:00Z-1953-10-20T23:59:59ZTEXT -
7by Hahn, AlbertSubjects: “…[Plumbers., Employment conditions.]…”
Published 1928, 22 september
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9by Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)
Published 1954-02-12T00:00:00Z-1954-02-12T23:59:59ZTEXT -
10Published 1928.“…International meeting of journalists during the plumber-strike.…”
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11Published 1928.Subjects: “…[Hoek, J.,, Smeding, J., Plumbers., Strikes.]…”
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13by Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)
Published 1952-09-27T00:00:00Z-1952-09-27T23:59:59ZTEXT -
14Published 1954Subjects: “…Construction industry (RT: Painters; Plumbers; Carpenters)…”
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15Published 1946Subjects: “…Construction industry (RT: Painters; Plumbers; Carpenters)…”
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16Published 1945Subjects: “…Construction industry (RT: Painters; Plumbers; Carpenters)…”
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17Published 1951Subjects: “…Construction industry (RT: Painters; Plumbers; Carpenters)…”
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19Published n.d.“…The National registration of plumbers.…”
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20Published c. 1940Subjects: “…Construction industry (RT: Painters; Plumbers; Carpenters)…”