The document discusses the British Library and its British Library Document Supply Service (BLDSS). The British Library is the national library of the UK and holds over 170 million items from around the world. It receives copies of all books published in the UK and Ireland. The BLDSS was established in 1973 and holds over 87.5 million items, including journals, conference proceedings, monographs, and theses that it loans out to support research. It provides materials to higher education institutions, students, and the public. The BLDSS also launched a new online ordering and tracking system in 2013.