@book
{TN_libero_mab2,
author = {
New, Anthony S.
},
title = {
The Observer's book of postage stamps
},
edition = {
5th reprint
}
,
publisher = {Warne},
isbn = {0723200912},
year = {1979},
booktitle = {The Observer's pocket series ; 42},
address = {
London
},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}