Opyt estestvennoĭ sistematiki nekotorykh verkhnepaleozoĭskikh ammonitov
By: V.E. Ruzhent︠s︡ev
Series: Trudy Paleontologicheskogo instituta -- t. 11, vyp. 3
Publisher: Izd-vo Akademii nauk SSSR
Published: 1940
Place of publication: Moskva
Language: rus
Number of pages: 134
Subjects: Ammonoidea; Paleontology
Notes: Académie des Sciences de l'Union des Républiques Sovietiques Socialistes. Travaux de l'Institut Paléontologique. Vol. 11, livr. 3, 1940.

In Russian with English summary.