Spine
The edge of a book block where all elements of a passport book are stitched.
a
b
c
Fig. 1. Ireland. Passport. 2013:
а — front side of a cover; b — central spread with a stitching thread; c — the same, top view
The edge of a book block where all elements of a passport book are stitched.
a
b
c
Fig. 1. Ireland. Passport. 2013:
а — front side of a cover; b — central spread with a stitching thread; c — the same, top view