Source
Spitzmueller (1982/83)
Spitzmueller, P., 1982. A Trial Terminology for Describing Sewing Through the Fold. The Paper Conservator, 7, pp.44–46.
Additional Reference
p. 45
Spitzmueller, P., 1982. A Trial Terminology for Describing Sewing Through the Fold. The Paper Conservator, 7, pp.44–46.
p. 45