You can use four ways to search the bibliographic data base SAHARAN VERTEBRATES:
Search by Authors: type one or several author names (or part of names)
Search by Date: type just a 4-digit year
Search by Date*: allows to search papers published before a date (Box BEFORE), after a date (box AFTER) or between two given dates (use both boxes)
Search by Taxonomy type one or several scientific names (Class, Order, Family, Genus or Species)
Search by Key-words: type ONLY ONE word, that will be searched in the fields Date, Title, and Taxonomy
Expert Search: search one or several words in a field to be selected, between a lower and an upper date
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