I am more interested in the contents of the books, not their scents.

[Sorry, Karkat, Philip is sounding a bit dismissive. Perhaps he's distracted by the mental note to research trolls. Or maybe it's the fact that this almost seems like the type of thing Shoutarou would lecture him on.]

I will take that kind of thinking into account the next time I am able to conduct a proper study. I am afraid my resources at this time are limited to these two guidebooks, which I have already looked through.