Leeds: printed by Titus Wilson of Kendal for members if the School of English Language in The University of Leeds, 1937. 8vo., pp.179, paper wrappers; blue ink ownership inscription to front free endpaper, light foxing to fore-edge of text block, wear to extremities of wrappers, overall a very good copy.

Oxford: Oxford University Press, 2011. 8vo., pp.xvi,824, paperback; a very good copy indeed.

Oxford: Oxford University Press, 2002. 8vo., pp.xii,644, paperback, four b/w illustrations; lightly rubbed, light surface scratches, a very good copy.

Oxford: Oxford University Press, 2009. 8vo., pp.xlvi,547, navy hardcover, gilt, b/w frontispieces; ownership signature to front free endpaper to both volumes, a fine set both in fine unclipped dust-jackets.

Cambridge: Cambridge University Press, 1992. 8vo., pp.xiii,268, hardcover, gilt; ownership bookplate to front paste down endpaper, light foxing to upper edge of text block, otherwise a very good copy, in a very good unclipped pictorial dust-jacket.

Cambridge: Cambridge University Press, 2008. Digitally printed paperback re-issue, 8vo., pp. 282, paperback; a near-fine copy.

Oxford: Oxford University Press, 2007. 8vo.,pp. ix,284, black hardcover, silver lettering; a near-fine copy. No dust-jacket.

Oxford: Oxford University Press, 2009. 8vo., pp. x,295, navy hardcover, gilt; a near-fine copy in a unclipped vg+ dust-jacket.

Oxford University Press, 2019. Reprint (first paperback edition), 8vo., pp.xi,562, paperback; a fine copy.

Oxford University Press. Reprint, 8vo., pp.xii,313, paperback; a fresh and near-fine copy.

Oxford University Press, 2006. 8vo., pp.x,291-664, navy hardcover, gilt; a fresh and near-fine copy, with just slight bruise at headband, in a very good unclipped dust-jacket, with sunning to the spine, and now in a protective cover.

Cambridge: Cambridge University Press, 1987. Reprint, 8vo., pp.xix,554, paperback; lightly sunned to spine, bruise to upper right corner, else very good indeed.

Cambridge: Cambridge University Press, 2000. Reprint, 8vo., pp.xv,539, paperback, gilt; some underlining which has been mostly rubbed out but light indentations remain, spine lightly sunned, a few light marks to fore-edge. lightly rubbed to extremities, a very good copy.

Oxford: Clarendon Press, 2009. 8vo., pp.xiii,252, glazed hardcover; a very fresh and near fine copy. No dust-jacket, as issued.

Oxford: Clarendon Press. 8vo., pp,vi,213, black hardcover, gilt; very slight bruise to lower right corner, a near fine copy, in an unclipped, near fine dust-jacket which is lightly scratched to rear, and is now in a protective cover.

Cambridge: Cambridge University Press, 2002. 8vo, pp.xiv,430, paperback, b/w frontispiece; just slight shelf-wear, internally fine, a very good copy indeed.

The Hague: Martinus Nijhoff, 1968. Reprint, 8vo., pp. xvi,298, paperback; a near-fine copy.

London: Routledge, 2006. 8vo.,pp. xvi,192, paperback; a near-fine copy.

Oxford: Clarendon Press. 8vo.,pp.xvii,424, paperback; stamp to bottom edge, very slight soiling to fore edge, slight shelf-wear to extremities, a very good and internally fresh copy.

Oxford: Oxford University Press, 2011. 8vo.,pp. xii,180, pictorial hardcover, b/w figures and tables; a near-fine copy. No dust-jacket, as issued.