Working rules.
Publisher: West Riding Joint Industrial Council for the Plumbing Trade
Published: 1938
Place of publication: [Yorkshire]
Language: eng
Number of pages: 15
Other titles: National Working Rules (with variations applying to the Yorkshire region).
Notes: These rules embody the National Working Rules issued by the National Joint Council for the Building Industry.

Cover title.

Caption title: National Working Rules (with variations applying to the Yorkshire region).