Side question. Was recently in the tabac in Valence TGV looking for a book by Fred Vargas to read, I find detective novels are a good way to practice my French

Side question. Was recently in the tabac in Valence TGV looking for a book by Fred Vargas to read, I find detective novels are a good way to practice my French when over on cycling trips (easier reading level than, say, Zazie dans le Metro). Anyway - this place had novels by authors from A-M...then two books by an author beginning X. Half the alphabet dropped due to lack of shelf space! The missing V section makes me curious - would de Villiers have been missing? Would it be under D or V in a french bookstore?