This supplement to Canadian Selection: Books and Periodicals for Libraries (1978) contains 1800 new titles and 50 new periodicals published up to the end of 1979.It expands the total listings in this selective, annotated bibliography to more than 5100 English language and periodicals about Canada, published in Canada, or written by Canadians at home or abroad.It covers a wide range of subjects including literature, biography, history, social sciences, and legal literature and, like the parent catalogue, is divided into five sections. These are: a list of monographs and periodicals useful in building collections of Canadian materials; the annotated titles in order of Dewey Decimal classifications; a selective list of Canadian periodicals; an author/title/subject index to the 1850 new titles; and a list of publishers represented in this unique guide for librarians.