Description based on: Aug. 1976. Latest issue consulted: Apr.1982. The first Rules were issued as a U.N. masthead document symbolled DP/1. Later (printed) issues were symbolled DP/1/Rev.1, DP/1/Rev.2, etc. and were also assigned U.N. sales numbers.
The 1980, 1981 and 1982 Rules were bound in one volume (staplebound).