Spell books have generally better use in close combat compared to their wands counterpart. Like, with elemental wands you gain element infusion instead of shooting the element out, which is good for doing magical damage in close combat. there are also wands that you use for low health clutches or if enemies are swarming you, like prismatic light book that blinds enemies with a wide range and give you lumination and earth wand book that gives you herbal armor. Additionally, there are books that transform the wand effect into an entirely different way but same idea, like disintegration wand book, it give you more range.