Template talk:Ref-Lille1908
From Embryology
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1244591/pdf/janat00468-0147a.pdf
1908 Edition - https://archive.org/details/developmentofchi00lillrich/page/n8
https://archive.org/details/developmentofchi00lill/page/n6
https://archive.org/details/developmentofchi00lillief/page/n6
1919 Edition - https://archive.org/details/developmentofchi1919lill/page/n6