Walker's Groups in the Western Approaches, etc. [An account of the work of Western Approaches Groups of anti-submarine vessels under the command of Captain Frederick J. Walker, 1941-44. With plates, including a portrait.]

"Walker's Groups in the Western Approaches, etc. [An account of the work of Western Approaches Groups of anti-submarine vessels under the command of Captain Frederick J. Walker, 1941-44. With plates, including a portrait.]"@en
"Walker's Groups in the Western Approaches"
"Walker's Groups in the Western Approaches"@en
"Walker's groups in the western approaches"@en
"Walker's groups in the western approaches"
"Walker's groups in the Western approaches"