@book
{TN_libero_mab2,
author = {
Salmon, Nathan U.
},
title = {
Frege's puzzle
},
publisher = {Ridgeview},
isbn = {0924922052},
isbn = {0924922559},
keywords = {
Frege, Gottlob
},
year = {1991},
address = {
Atascadero, Calif.
},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}