N. A. Sobolev

• "--dusha soboi͡u︡ vechno nedovolʹna"
• Krasnai︠a︡ kniga Moskovskoĭ oblasti
• Kriterii i metody formirovanii︠a︡ ėkologicheskoĭ seti prirodnykh territoriĭ
• Uspekh "beznadëzhnogo dela"
• V Rossii︠u︡ mozhno tolʹko veritʹ--