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file U (Hackmann)Polhem
Polhem: Tidskrift for Teknikhistoria
argang 6 no. 3, 1988, 'Temanummer: Instruments and Technology' Containing articles by Willem D. Hackmann, Robert B. Gordon, Curt Roslund, Per Ragnarson; Presented by Dr W. D. Hackmann
[1989-31]
1988