Greek Mythology: Gods - Heroes - Trojan war - Odyssey

There are quite a few contradictions in this book. For example, in the part of Ares, he is said to be “the only legitimate son of Zeus and Hera”, but just two pages later in the part of Hephaestus, it is said that “[t]wo legitimate sons were born to Zeus and Hera”.
A lot of information is repeated multiple times, in some cases only a few pages apart or even in the same page. For example, the birth of Athena is told three times, two of which are on the same page.
Some big mistakes are also present. For example, in the part of Apollo, it is said “Sarpedon, who had been killed at the hands of Patroclos, [...] handling him over to his brothers, Hypnos (Sleep) and Thanatos (Death)” Hypnos and Thanatos are in not brothers to neither Apollo nor Sarpedon nor Patroclos.