Written in Ancient Common.

Study it for 2d4 SR: learn 1 Utility from Death except Death Tricks. Swap it after 1 SR.

Study it for 1d8 more SR: as long as you hold the tome, cast T0 to T5 Death spells with [+1A].

Study it for 2d8 more SR: learn Speak with Corpse (cast with Mana or with HD) and you can make a 24h ritual to preserve their soul from the worst aspects of the Grey (priceless service).