DYBOWSKI B., Color variety of the house sparrow Passer domesticus L. var. Scheffineri Dybowski. A pair of loose nature notes.

Color variation of the house sparrow Passer domesticus L. var. Scheffineri Dybowski. A few loose natural history notes.

Warsaw 1916. druk. and Lit. by Jan Cotta. Separate imprint from volume XXIII-th of "Pamiętnik Fizyograficzny" published from the allowance of the D-ra J. Mianowski Relief Fund for those working in the scientific field in Warsaw. 4, pp. [1], 128-131, 1 illustr. on plates, cover broch. publ.
Discoloration, stains, uncut edges of covers. Good condition.