History of the Plough [typescript] / K. H. Rau ; translated [from the German] by J. de C. Laffan; comments by J. B. Passmore. [Rau was professor at Heidelberg. vii + 71p., this is a 1930s(?) translation of the 1845 original but without the copious illustrations. It includes numerous footnotes and a bibliography. The comments at the end are by J. B. Passmore of Reading University]