Instruction manual / guide book for the Massey Ferguson 31-6 Combine Harvester, dated 1963.  It measures approx. 21cm by 15cm, and contains 69 pages.  In fair condition, with some grubbiness and staining to the cover, and some page browning.  It has had some water damage in the past, leaving a water mark towards the bottom edge of some pages, and some rear pages have previously been stuck together and separated, with resulting wrinkling and scuffing to the surface.