Furthermore, the advent of printing made a large selection of textbooks more widely available: some of them were very short introductions for younger students, others were compendia, others paraphrases (like those by Jacques Lefèvre d’Etaples (1455–1536), printed for the first time in 1492), and still others dialogues (again, Lefèvre d’Etaples created some of the most significant examples). Other popular works used for teaching were abridged versions of the Aristotelian treatises reduced to conclusiones, like the popular Textus abbreviatus philosophiae naturalis by the French theologian Thomas Bricot (d. 1516). There were also many different textbooks, which generally followed canonical organizations: either they explained the Aristotelian works according to their order in the corpus, or they highlighted subjects like principles, causes, movement, infinity, place, void, and time. The famous Commentarii Conimbricenses, which from 1594 on became the standard text in the Jesuit curriculum, contains a whole course on natural philosophy organized as a commentary of the Aristotelian corpus. Particularly after the second half of the sixteenth century, vernacular treatments of Aristotelian natural philosophy also began to circulate, such as the translations by Antonio Brucioli (1498–1566), the paraphrases by Alessandro Piccolomini (1508–1579), the summaries by Jean de Champaignac (fl. 1595) and Scipion Dupleix (1569–1661), and the commentaries by Cesare Crivellati (1553–1640), the latter explicitly addressed to university students.