https://www.digitale-sammlungen.de/en/view/bsb10312720?page=,1
'qvinqve illvstrivm avctorvm formalitatum libelli : nempe, antonij syrecti, cum annotationibus...
https://wellcomecollection.org/works/c5nv2z6u/items?canvas=21&page=4
Neque Eros, neque Trotula, sed Salernitanus quidam medicus, isque Christianus, auctor libelli est...
https://www.avvenire.it/vita-e-cura/i-libelli-educativi-anti-omofobi_14608
I libelli "educativi" anti-omofobi