Géneros de audiolibros : Science
The Child's Day
Woods Hutchinson
Round-about Rambles
Frank Richard Stockton
General Science
Bertha M. Clark
The Notebooks of Leonardo Da Vinci
Leonardo da Vinci
Amusements in Mathematics
Henry Ernest Dudeney
A Book of Natural History
Various
A Handbook of Health
Woods Hutchinson
Physiology and Hygiene
Francis M. Walters
The People's Common Sense Medical Adviser
Ray Vaughn Pierce
Searchlights on Health
B. G. Jefferis and J. L. Nichols
On the Trail of the Space Pirates
Carey Rockwell
Beknopte uiteenzetting van de theorie van Darwin over het ontstaan der plant- en diervormen
Julius Dub