pocketbook

taskumuistio, taskukirja

lompakko puhekieltä A woman's purse.
puhekieltä One's personal budget or economic capacity - the amount one can afford.
puhekieltä A small book, especially one that can fit in a pocket; a paperback; also a pocket book.

The publishers brought out small format pocketbooks of the whole of their nature series.