A SECONrLi ompletely revised and augmented edition Afyiiruhrer durch die Schweizerische Theodore van Schelven (Amsterdam: publishing Co., Keizersgracht 133. 1 dollar), hasVrow been published by the Swiss Association for Documentation. The pamphlet has proved of considerable value to Swiss research workers during the war years, since it quotes collections containing literature lacking in the large Swiss scientific libraries and which could not be included in the general catalogue of the Swiss National Library. The new edition lists 227 documentation centres arranged by subject according to the Universal Decimal Classification, together with alphabetical name, subject and place indexes, and a list of users of the Universal Decimal Classification. The introduction includes brief notes on the Swiss Association for Documentation, the Swiss Association of Librarians, the general catalogue and information service of the Swiss National Library, Berne, on documentation terminology, the standardization of documentary aids and a bibliography of publications of Swiss authors on documentation, bibliMnjaphy and the decimal classification.