2016-10-31T12:39:24Z (GMT) by Miguel Clavero Virgilio Hermoso
MS Excel file with two sheets, one for the 19th century Madoz Dictonary (MADOZ) and the other for the 16th century Relaciones Topográficas. Both sheets give the geographical position (in decimal degrees) of localities with information on freshwater fish included in the two historical sources. A "1" is given to localities citing the eel, while "0" is assigned to localities in which freshwater fish were identified by specific or genus-level names, but the eel was not cited