Adult killer whales give birth to a single baby (only once were twins recorded) about every 3-10 years. They start breeding at about 14-15 years of age (the youngest known was only 11).
I've seen Univision translate the term bachelor's degree to licenciado, so I think it's reasonable to assume that to be the best translation. There may be some differences in the named programs overseas, though.
Accordingly, about 1475, a printed edition was issued, followed, shortly, by Caxtons translation from two French versions of the Liber de ludo scacchorum of Jacobus de Cessolis, made by Jean Faron and Jean de Vignay.