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Bibliography of British and Irish History provides bibliographic data on historical writing dealing with the British Isles, and with the British empire and commonwealth, during all periods for which written documentation is available - from 55BC to the present.The Forest History Society Research Portal offers over 45,000 citations to published items on environmental history, over 30,000 photographs, and other material.In the Sciences, primary sources are documents that provide full description of the original research.
When searching the biomedical literature, you will find two main categories of articles: Primary and Secondary.
Primary sources include articles that describe original research.
Other sources, such as practice guidelines and expert topic summaries are usually considered secondary as well (although some would argue that they are tertiary since they reference both primary and secondary sources).
Secondary sources, especially systematic reviews, are written under specific guidelines and protocols and often include methods sections and abstracts.
So the presence of these sections are not necessarily an indication of a primary source.
Many secondary sources that are published in peer-reviewed journals will also include an abstract, although many are not structured abstracts and if they are, often contain different section headers. Open the Pub Med record, review the abstract, then skim the full text on the journal website.
Some types of secondary source include: Textbooks; journal articles; histories; criticisms; commentaries; encyclopedias Examples of secondary sources include: America: History and Life is the primary bibliographic reference to the history of the United States and Canada from prehistory to the present.
Historical Abstracts is a reference guide to the history of the world from 1450 to the present (excluding the United States and Canada, which are covered in America: History and Life, above).
Joseph Sabin’s Bibliotheca Americana: A Dictionary of Books Relating to America from Its Discovery to the Present Time has been heralded as a cornerstone in the study of the history of the Western Hemisphere.
Gale’s Sabin Americana, 1500-1926 takes the works currently captured from that bibliography and makes them available online.