Decision No 20-63 of 11 December 1963 amending Decision No 31-53 of 2 May 1953 on the publication of price lists and conditions of sale applied by undertakings in the steel industry
Odločba št. 20-63 z dne 11. decembra 1963 o spremembi Odločbe št. 31-53 z dne 2. maja 1953 o objavljanju cenikov in prodajnih pogojev, ki jih podjetja uporabljajo v jeklarski industriji