bulky: 822 pages bound into 5 books
thin: 512 pages stapled as 8 booklets
pictorial
wordy
ratio of words per page, G1:Y1 = 1:2
ratio of pictures per page, G1:Y1 = 2:1
82% of illustration pictorial
32% of illustrations pictorial
18% of illustrations diagrammatic
69% of illustrations diagrammatic