Buttress, F.A. World guide to abbreviations of Organizations - 5th - Leonard Hill London 1974 - 470 = Buttress, F.A. Standard No.: M Standard Tech. Report. No.: LCCN: B Nat. Bib. No.: 5244 Nat. Bib. Agency Control No.: 06:003.083BUT (R) Subjects--Topical Terms: Refereence Materials Universal Decimal Class. No.: 06:003.083