@conference {999,
	title = {Grey areas in book historical research. Can international co-operation offer a practical solution?},
	booktitle = {Books beyond frontiers: the need for international collaboration in national retrospective bibliography (CERL Papers III)},
	year = {2003},
	month = {01/2003},
	isbn = {0-9541535-1-0},
	author = {Proot, Goran and van Rossem, Stijn},
	editor = {Shaw, David J.}
}
