edited by Winfried Lang

Graham & Trotman/M. Nijhoff 1995 International environmental law and policy series

所蔵館43館

edited by W. Lang, H. Neuhold, K. Zemanek

Graham & Trotman/M. Nijhoff 1991 International environmental law and policy series

所蔵館30館

Winfried Lang

Springer-Verlag 1982 Forschungen aus Staat und Recht 61

: Wien , : New York

所蔵館15館