KLEPPER, Gernot - MICHAELIS, Peter. Cadmium in West Germany : how much do we know about stocks and flows? Kiel : Institut für Weltwirtschaft, 1991. 66 s. Kiel working papers, no. 494. ISSN 0342-0787. [Počet ex. : 1, z toho voľných 1, prezenčne 0]