Читать книгу History of Education - Levi Seeley - Страница 26

[13] The student should bear in mind the fact that the purchasing power of a sum equivalent to four dollars was much greater in those days than now.

[14] "Outlines of the World's History," p. 12.

[15] "Outlines of History," p. 20.

[16] It must be observed that the ancient volume, or roll, contained much less matter than the modern book.