| List I | List II | ||
|---|---|---|---|
| A. | Folio | I. | A "large" printer's sheet which is folded twice to form four leaves. |
| B. | Quarto | II. | A "large" printer's sheet which is folded thrice to form eight leaves. |
| C. | Octavo | III. | A "large" printer's sheet which is folded once to form two leaves of four pages. |
| D. | Duodecimo | IV. | A "large" printer's sheet which is folded to form twelve leaves. |


