Geobotanical study of the meadows of the Tver province: a brief preliminary report on the works of 1912-1913.

Geobotanical study of the meadows of the Tver province: a brief preliminary report on the works of 1912-1913./ Ilyinsky A.P. - Tver: printing house of the provincial zemstvo, 1913. -605: people, territory..Electronic copy source: Tverskaya OUNB