HRBÁČEK, J. [ED.]. 1966. Hydrobiological Studies I. Academia, Prague. 408 p. 70 Kčs. (Also available through E. Schweizerbart'sche Verlagsbuchhandlung, Stuttgart. DM 50.) - FREY - 1968 - Limnology and Oceanography - Wiley Online Library
1957 F Germany Stuttgart 5 Deutsche Mark Coin Silver 625) 1.2g 29 mm KM# 112 | eBay
Lack Coinage 5 DM J.387 Silver Currency Coin 1966 G Without Randschrift 54958 | eBay
5 DM 1966 J Silberadler | J. 387 | Historia-Münzhandelsgesellschaft
5 Mark 1966 G, Federal Republic - 1951-1974 - 5 Mark - Germany - Coin - 43027
Lack Coinage 5 DM J.387 Silver Currency Coin 1966 G Without Randschrift 59789 | eBay