'Addendum no.1 (March 1974) to publication 7168-0542-1' ([6]p.) as insert.
Includes index.
London Buildings Acts (Amendment) Act 1939, Section 20, code of practice for buildings of excess height and-or additional cubical extent requiring approval under section 20 of the London Building Acts by Greater London Council. ISBN 0716805421. Published by G.L.C. in 1974. Publication and catalogue information, links to buy online and reader comments.