25.5 x 16.5 cm, 9 volumes, original wrappers (paperbacks), Text in English, French, German, Dutch, some browning, partly unopened, otherwise very good condition, see picture.
Complete set of Lorentz’s collected scientific works in nine volumes, published posthumously. Contains key papers in theoretical physics, including contributions to electromagnetism, relativity, and optics, in the original languages of publication. With portrait of the author in volume I.
