9 categories of designs with different variations: 23 patterns in total, illustrated by 7 black and white photographs.
Undated, but estimated late 1960s / very early 1970s.
Please see 3rd picture for full content.
Looks a bit old with some signs of age and use, and it has two blue pen scribbles on the back cover, and blue pen writing on page 29 (please see 5th photo). The two staples are a bit rusted.
Dimensions: 23.5 cm x 18 cm
Weight of the booklet (without protection and packaging): 89 g