5342 Dortmunder Union Brückenbau – Dortmund

Hydro engineering structures.
Nile Baggare Adfina - Egypt, Weir Wilhelmstal, Weir Widderhausen Werra River
With two original letters, one from Dortmunder Union Brückenbau and
One from Materiels & Materiaux de Construction au Congo - Bruxelles. Both dated 1957, with prospect.
With two original letters.
Extra: Hydro Engineering Structures, 18 pages, High Pressure Gates, 12 pages
Two "Sonderdruck"

Size: 21 x 30 cm., 64 pages
Date: 1957