Nizhnepermskie ammonity IUzhnogo Urala.
Series: Akademiia nauk SSSR.  Trudy paleontologicheskogo instituta, t. 60
Publisher: Izd-vo Akademii nauk SSSR
Published: 1956
Place of publication: Moskva
Language: rus
Subjects: Ammonoidea; Paleontology -- Paleozoic.