@book{9909520,
	author = {Игнатьев, Б. В. and Соколов, С.},
	title = {Тетрадь по географии},
	publisher = {Гос. изд.},
	year = {1925},
	series = {Учеб. пособия для шк. I и II ступ.},
	address = {М.},
	edition = {2-е изд.}
}