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Folio
- Size: 12x19"
- Aspect ratio: 12/19
Quarto
- Size: 9.5x12"
- Aspect ratio: 19/24
Imperial Octavo
- Size: 8.3x11.5"
- Aspect ratio: 83/115
Super Octavo
- Size: 7x11"
- Aspect ratio: 7/11
Royal Octavo
- Size: 6.5x10"
- Aspect ratio: 13/20
Medium Octavo
- Size: 6.5x9.3"
- Aspect ratio: 65/93
Octavo
- Size: 6x9"
- Aspect ratio: 2/3
C Format
- Size: 13.5x21.6 cm
- Aspect ratio: 5/8
Crown Octavo
- Size: 5.4x8"
- Aspect ratio: 27/40
B Format
- Size: 12.9x19.8 cm
- Aspect ratio: 43/66
12mo
- Size: 5x7.4"
- Aspect ratio: 25/37
A Format
- Size: 11x17.8 cm
- Aspect ratio: 55/89
16mo
- Size: 4x6.8"
- Aspect ratio: 10/17
18mo
- Size: 4x6.5"
- Aspect ratio: 8/13
32mo
- Size: 3.5x5.5"
- Aspect ratio: 7/11
48mo
- Size: 2.5x4"
- Aspect ratio: 5/8
64mo
- Size: 2x3"
- Aspect ratio: 2/3
