Draft customs nomenclature.
League of Nations.Economic Committee.Sub-committee of Experts for the Unification of Customs Tariff Nomenclature.
Geneva : League of Nations,
1937.
"Official no.: C.295.M.194.1937. II. B."
"Geneva, July 15th, 1937." vol 1
"Geneva October 1st 1937." vol 2
Tariff