Help BMB - Table of contents | 2.2.8 Subject tree | ||
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The subject tree is only available on the advanced search screen (under the category More search possibilities). ![]() The subject tree is generated from a controlled vocabulary of subject terms with up to four levels: the highest level (level 1) corresponds to nine broad divisions of knowledge, while the lowest (level 4) is a specific subdivision of one of over 1000 third-level subjects, e.g. for the subject of hospitals run by the Augustinian canons, the entry is: “Religion – Religious orders – Augustinian canons, order – hospitals” where “Religion” is the highest level; “Religious orders” level 2; “Augustinian canons, order” level 3; with “hospitals” a final subdivision at the lowest level. The level 3 and level 4 entries are also displayed alphabetically in the Subjects browselist. Thus, under “Augustinian canons, order” there are over forty subdivisions, from “agriculture” to “wine-trade”. The first subheading (General) represents entries where there is no subdivision of the level 3 subject. Click the search term to drill down to a lower level ( ![]() ![]() ![]() ![]() ![]() ![]() |