• http://en.wikipedia.org/wiki/British_Library
• http://www.bl.uk/catalogues/z3950fullaccess.html

Notes in the code (lib/alexandria/book_providers/z3950.rb) suggest that this provider should eventually be replaced:

• switch from BL to Copac, which incudes the BL itself and many more libraries: http://copac.ac.uk/libraries/
• Details: http://copac.ac.uk/interfaces/z39.50/
• The SUTRS format used by Copac is different from the one used by BL
• http://www.bl.uk/catalogues/z3950copacaccess.html
• http://en.wikipedia.org/wiki/Copac