@book
{TN_libero_mab2,
author = {
},
title = {
Walford's guide to reference material
1 Science & technology
},
edition = {
5. ed.
}
,
publisher = {Library Ass.},
isbn = {0853659788},
year = {1989},
address = {
London
},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}