Psammosteidy (Agnatha, Psammosteidae) Devona SSSR
By: D.V. Obruchev i Ė. I͡U︡. Mark-Kurik.
Contributors: Mark-Kurik, Ė. I͡U︡.
Publisher: Institut geologii Akademii nauk Ėstonskoĭ SSR
Published: 1965
Place of publication: Tallin
Language: rus
Number of pages: 303
Subjects: Drepanaspidae.; Paleontology -- Devonian.; Paleontology -- Soviet Union.
Notes: Bibliography: 283-[289].
At head of title: Institut geologii Akademii nauk Ėstonskoĭ SSR.
Statement at head of title also in Estonian.
Summary in Estonian and English.
Errata slip inserted.