@misc{Petri_Èduard_Ûl'evič_(1854–1899)_Učebnyj_[ante,
 author={Petri, Èduard Ûl'evič (1854–1899)},
 copyright={Public Domain},
 address={S.-Peterburg},
 howpublished={online},
 year={[ante 1912]},
 publisher={Izdanie T-va A. F. Marksa},
 language={rus},
 title={Učebnyj geografičeskij atlas : glavnyh" kart" - 49, dopolitel'nyh kart" i čertežej - 140 (na 48 tablicah)},
 keywords={geographical atlases, school atlases, 19th century},
}