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This bibliography on the water and geological information or Liberia was begun in 1995 as a request through the US Department or State by the Government or Liberia. It brings together selected citations from a variety of different cartographic, geographical, geological and hydrological resources and specialized library collections. Most of the citations have location information on where these items can be located and used on site, and either borrowed through inter-library loan or purchased through a commercial document delivery services.
1919/28 cumulation includes material previously issued in the 1919/20-1935/36 issues and also material not published separately for 1927/28. 1929/39 cumulation includes material previously issued in the 1929/30-1935/36 issues and also material for 1937-39 not published separately.
1785/1918 includes material issued previously in the annual Bibliography of North America geology, and in cumulative volumes issued by N. H. Darton and F. B. Weeks. 1919/28 cumulation includes material previously issued in the 1919/20-1935/36 issues and also material not published separately for 1927/28. 1929/39 cumulation includes material previously issued in the 1929/30-1935/36 issues and also material for 1937-39 not published separately.
Grundlage der vorliegenden Bibliographie sind die 29 Bände der Bibliographischen Berichte, die als universaler Nachweis von Bibliographien von 1959 bis 1987 erschienen sind. Ziel der Internationalen Bibliographie der Bibliographien 1959-1988 ist es, den Gesamtdatenbestand in kumulierter Form leicht zugänglich zu machen. Die Titel sind in einer einheitlichen Systematik nach Themengebieten zusammengefasst. Insgesamt werden ca. 176.000 Titel erschlossen. Bibliothekaren, Dokumentaren und Informationsvermittlern wird mit den Bibliographien der zweiten Stufe ein wichtiges Hilfsmittel für die Selektion und Wertung von Bibliographien an die Hand gegeben.