Jacob van Maerlant ~ Der naturen bloeme: People that live both on the Land and in the Rivers (c. 1300) book: (https://archive.org/details/dernaturenbloemvanjacobvanma/page/n7/mode/2up) (https://digitale-sammlungen.llb-detmold.de/urn/urn:nbn:de:hbz:51:1-13729?)