He reads from Hans Zinsser 's Rats , Lice and History before Volume 19 about the Black Death .
For example , the Professor reads a book about dinosaurs to introduce Volume 1 about prehistory .
Professor reads from Hans Zinsser 's Rats , Lice and History before Volume 19 about the Black Death .
For example , the Professor reads a book about dinosaurs to introduce Volume 1 about prehistory .