Company duties : a ready reference manual for company personnel / by Mark M. Boatner Identification list for ordnance, B.L. 5.5-in., Mark 3 and ordnance, B.L. 4.5.-in., Mark 2 on carriage, 5.5-in. or 4.5-in. gun, Mark 2 universal history series Balkans / Mark Mazower afv Crusader-Cruiser Mark IV / by James Bingham Certification mark for filtration plants giving protection against poison gases used in war / Home Office, Air raid precautions department Identification list for ordnance, B.L. 5.5-inch, Mark III and ordnance, B.L. 4.5.-inch mark II on carriage, 5.5-inch or 4.5-inch gun, mark I Identification list for ordnance, S.B. 4.2-inch mortar mark 2 on mounting, 4.2 inch S.B.mortar mark 3 also plate, base, mobile 4.2-inch s.b. mortar, mark 1 new vanguard series British Mark I tank 1916 / David Fletcher ; illustrated by Tony Bryan Wehrmacht camouflage and markings, 1939-1945 / [by] W. J. K. Davies; [artwork Kenneth M. Jones and Gerald Scarborough] afv Mediums Marks I-III / by N.W. Duncan afv Medium tanks Marks A-D / by Chris Ellis and Peter Chamberlain afv Valentine, infantry tank Mk III / by B.T. White