their development and operations
Consentino & Stanglini
Seaforth Publishing, 2016.
large format hardback [29x25cm]. 276 pages. well illustrated with photos, plans and maps.
fine condition hardback in the dust-jacket
Hauser, HeinrichLondon, Arthur Barker Ltd, 1938
Gale & Polden [publisher]
Gale & Polden Ltd.,Portsmouth and Aldershot, 
VestrisJournal of Commerce, 1929
Akers, Major-General C.S.Royal Engineers’ Institute, 1886