Partial Differential Equations of Mathematical Physics.

Webster, Arthur Gordon / Plimpton, Samuel J (ed.).

G. E. Stechert & Co. / B. G. Teubner, New York / Leipzig, 1927

23 x 16 cm, cloth hardcover, viii, 440, (4) pages, Text in English, condition worn binding with fraying at spine ends, top edge with large stain affecting the margins of the pages, first endpaper missing and corner of title page missing, name on title page, paper browned, although still in (very) good condition, see picture.