The April 2005 issue of D-Lib Magazine is now available

The April 2005 issue of D-Lib Magazine (http://www.dlib.org/) is now
available.

This issue contains four articles, the 'In Brief' column, excerpts from
recent press releases, and news of upcoming conferences and other items
of interest in 'Clips and Pointers'. The Featured Collection for April
is 'IMAGES: Seeing the Invisible' courtesy of William Lewis and James L.
Burch, Southwest Research Institute.

The articles include:

Social Bookmarking Tools (I): A General Overview
Tony Hammond, Timo Hannay, Ben Lund and Joanna Scott, Nature Publishing
Group

Social Bookmarking Tools (II): A Case Study - Connotea
Ben Lund, Tony Hammond and Timo Hannay, Nature Publishing Group; and
Martin Flack, NeoReality, Inc.

Initial Experiences in Developing a Chronologically Organized Digital
Library for Continuing Education in Biodefense
Donna M. D'Alessandro, MD and Michael P. D'Alessandro, MD, University of
Iowa Carver College of Medicine

Survey of the Providers of Electronic Publications Holding Contracts
with Spanish University Libraries
Blanca Rodriguez Bravo and Maria Luisa Alvite Diez, University of Leon

Bonnie Wilson
Editor
D-Lib Magazine