Project Runeberg,
Our catalog of published works has a few news in the left column.
Have a look at http://runeberg.org/katalog.html
The first little icon indicates the type of work: normal book, music, painting, periodical (the letter "P"), or administrative (a yellow star). This icon was there yesterday too, but it was just a normal book for most of our titles. It has now been updated.
Second is a new orange "MARC" icon. For the titles where it is defined, this is a link to bibliographic information in the online catalog "Libris" of the Royal Library in Stockholm. MARC is the name of a file format defined in the 1960s for "MAchine-Readable Cataloging", which is used internally in library catalogs. You don't need to be a librarian to understand and appreciate the MARC link. But librarians are perhaps the only ones who immediately recognize the name MARC.
This orange MARC icon also shows in the pages of that work, at least on the front page. In some cases, there are separate bibliographic records for each part of a multivolume work, and we do our best to link to them.
Linking to existing bibliographic records is our easy alternative to creating our own. Some (librarians) have asked us to include more kinds of information in our own catalog, especially subject classification, to help users find books about topics like zoology or electrical engineering. The current MARC links doesn't help with these kinds of searches. But in theory we could now import the classification found in existing MARC records. This still requires some programming, for which we have no time plan. But for this to be useful, we need to find the right links, the existing bibliographic records for each of our published titles. We currently have MARC links for 59 of the 555 titles in our catalog, so there is some work to do...