The concept "valid law"
by Alexander Peczenik
(Acta Universitatis Stockholmiensis, . Studia juridica Stockholmiensia ; 41)
Almqvist & Wiksell, [1972]
Scandinavian studies in law
Reprint from Scandinavian studies in law, 1972
Bibliographical footnotes
University of Stockholm , Almqvist & Wiksell International [distributor]