Arseneault, M. (1994).  Salmon saga: Murphy's law as a fish story. Ceres. Rome.  
26:10-12.
	
For thousands of years salmon (Salmonidae) and 7 other species of fish migrated 
up the Dordogne in France. At the turn of the 20th Century hydroelectric dams 
were constructed along the river, impeding salmon reproduction; despite the 
construction of fish ladders at the dams, by 1920 the salmon had disappeared 
from the Dordogne. A salmon restoration project was initiated but 15 years and 
40 million FF later the salmon have still not returned. The various problems 
encountered in trying to ensure the return of the salmon to the river are 
discussed.