Gammarus schmidti [details]
Not specified, Derzhavnin revised material from Kovš and Avachinskaya Guba, Kamchatka [details]
"Usty Kamchatsky Kochka, zaplesk morya", Kamchatka [details]
Unclerar; Derzhavin analyzed material from Kovš (Avachinskaya Guba) and brackish lake Kultuchnoe ozero (close to ... [details]