Guide to mental exercises when teaching the domestic language;In three courses, published by Egor Gugel, the grades inspector un...

Gugel, Egor Osipovich (1804-1841).Guide to mental exercises when teaching the domestic language;In three courses, published by Egor Gugel, the grades inspector under the imperial educational house in Gatchina.- St. Petersburg: I. Zaicin, 1833. - [4], XIV, 6, 171 p.;21. -.Electronic Source: PB