Qualitative Theorie nichtlinearer Differentialgleichungen.

Reissig, G. / Sansone, G. / Conti, R.

Edizioni Cremonese, Roma, 1963

24.5 x 17.5 cm, blue cloth hardcover with dust jacket, xxxii, 382, (2) pages, Text in German, dust-jacket and paper discoloured/ aged toned, although in very good condition, see picture.