Order of the Government of the Czech Socialist Republic No 20 / 1973 Coll.

Ordinance of the Government of the Czech Socialist Republic amending and supplementing the Government Order of the Czech Socialist Republic No. 159 / 1969 Coll., on Cultural Funds, on the Contributions of Beneficiaries of Copyright and Executive Artists to Cultural Funds, on Contributions for the Use of Free Works of Literary, Scientific and Artistic and on Contributions of Users of Works