@book{10007332,
	author = {Яковлев, Н. Н.},
	title = {Из истории наук о земле},
	publisher = {Книга},
	year = {1921},
	series = {Культ.-просвет. б-ка},
	address = {Пг.},
	note = {Напеч. в Петрограде}
}