THE Wolseley A.R.9 engine is a nine‐cylinder air‐cooled radial rated at 185 h.p.
(1933), "The Wolseley‐Morris Engine: The 185 h.p. Wolseley A.R.9 Fully Described and Illustrated", Aircraft Engineering and Aerospace Technology, Vol. 5 No. 7, pp. 157-159. https://doi.org/10.1108/eb029697
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