The aim of this series is broadly analogous to that of the Handbooks for the Identification of British Insects.
Klucze do oznaczania owadów Polski series is edited by the Polish Entomological Society.
The German entomologist Fritz Hieke [de] wrote in two reviews that, thanks to rich illustrations, the concerned publications could be of use even for people not speaking Polish.
Issues dealing with large (super)families are further subdivided into parts designated by letters.
For example, the part dealing with the subfamily Staphylininae of the family Staphylinidae is denoted by the part number XIX: 24e (volume XIX, Coleoptera; 24, family Staphylinidae; 24e, subfamily Staphylininae) and the continuous number 111.