Editing Conrad Gessner (section)

==== ''Bibliotheca universalis'' (1545–1549)====
{{main|Bibliotheca universalis}}
In 1545, after four years of research, Gessner published his remarkable ''[[Bibliotheca universalis]]'',{{sfn|Gessner|1545}} an exhaustive catalogue of all known works in Latin, Greek and Hebrew, of all writers who had ever lived, with the titles of their works, and brief annotations.{{sfn|Chisholm|1911}} The work, which included his own bio-bibliography, listed some three thousand authors alphabetically, and was the first modern bibliography published since the invention of printing. Through it, Gessner became known as the "father of bibliography." In all, about twelve thousand titles were included.

A second part, a thematic index to the work, ''Pandectarum sive partitionum universalium libri xxi'',{{sfn|Gessner|1548}} appeared in 1548. Although the title indicated that twenty one parts were intended, only nineteen books were included. Part 20, intended to include his medical work, was never finished and part 21, a theological encyclopaedia, was published separately in 1549.