BESIDES testing and the investigations resulting directly therefrom, the chief work of the D.V.L. is technical development.
Beck, W.C. (1931), "Past and Future in Germany: A Review of the D.V.L.'s Work During the Past Year and a Summary of the New Budget", Aircraft Engineering and Aerospace Technology, Vol. 3 No. 4, pp. 100-100. https://doi.org/10.1108/eb029390
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