Psammosteidy ... Devona CCCR
By: D.V. Obruchev i E. IU. Mark-Kurik.
Contributors: Mark-Kurik, E. IU.
Published: 1965
Place of publication: Tallin
Language: rus
Number of pages: 304
Subjects: Petromyzonidae, Fossil
Other titles: Devonian Psammosteids of Russia.
Notes: At head of title: Institut Geologii Akademii Nauk Estonskoi SSR.

Title tranlated: Devonian Psammosteids of Russia.