This facility allows you to search for books by year of first publication and should prove of benefit not only to those who are primarily interested in locating more recent publications, but also to bowls historians. About ten per cent of the total number of books on the site have had to be excluded from this analysis because of the lack of a publication date - both in a few of the books in my collection and in some of the books that I don't own where information is incomplete. However, in a few cases it has been possible to allocate a book to a specific decade by making a reasoned estimate and these are shown as, for example, '1970s', '1980s', etc. Books that are regularly updated, such as yearbooks and laws, are excluded from this analysis.