803,402 WORLD World guide to special libraries / [edst Bettina Bartz, Ruth Lochar, Helmut Opitz]. - 2 ed. - München : K.G. Saur, 1990. - 2 vol. , 31 cm Vol. 1. . Libraries A-L. - XXXIV, 606, [1] s. Vol. 2. i Libraries M-Z Index. - [7], 609-1196 s. (Handbook of International Documentation and Information ; vol. 17) ISBN 3-598-22230-0