The needs of the clients of law libraries in Israeli universities (Jerusalem, Tel-Aviv and Bar Ilan) have long shown the importance of, and the need for, collaboration and cooperation among these libraries in order to present the best of services to their clientele. Therefore, the work of Mrs. Bar-Niv, from the Law Library at Jerusalem University, has been wholeheartedly welcomed. With the cooperation of the other two law libraries, Mrs. Bar Niv published in 1975 the Union List of Periodicals in Law Libraries in Israel (updated through a supplement in 1976). This list has proved an indispensable aid for staff and students.