Pages: (1-6 )
Abstract
This article highlights the result of an investigation into the nature, categories and sources of grey literature used by researchers and scientists in tropical agriculture. The nature, categories and sources of grey literature was studied by direct examination of typical copies on the shelves of the International Institute of Tropical Agriculture library. Finding showed about 858 types of grey literature including the following: Annual & biennial reports; commissioned study; conference proceedings; confidential reports; consultancy reports; contract reports; experimental reports; feasibility studies; occasional papers; project reports; research bulletins; research highlights; seminar & workshop reports; statistical data (unprocessed); technical communications; technical notes; technical reports; theses and dissertations. At a broad level of categorization, 18.2 percent of the grey literature was technical reports; 27.6 percent were conference proceedings; 24.4 percent were annual reports; 8.2 percent were theses and dissertations; 22 percent represent other types. 770 diverse sources of grey literature were identified, including consultancies, foundations, government departments, international organizations and agencies, research institutes and stations, societies, associations and universities.
Keywords: Agriculture, research, Nature,