books.google.co.uk - The RAF’s most successful heavy bomber of World War 2, the Avro Lancaster formed the backbone of Bomber Command during the large-scale night bombing campaign against occupied Europe. In this, the first of two volumes on the British bomber icon of World War 2, noted English aviation historian Jon Lake...http://books.google.co.uk/books/about/Lancaster_Squadrons_1942_43.html?id=P0Qo5jvkNrgC&utm_source=gb-gplus-shareLancaster Squadrons 1942-43