@book{29767,
	author = {Kersten, Kurt and L. D. Frenkelʹ (Petersburg)},
	title = {Das heutige Russland 1917-1922 :},
	publisher = {L. D. Frenkel-Verlag,},
	year = {1923.},
	address = {Berlin :},
	note = {Redakcja: Kurt Kersten, Michael Kritschewski.},
	url = {https://dn790004.ca.archive.org/0/items/dasheutigerussla00berluoft/dasheutigerussla00berluoft.pdf}
}