Solutions Pluto's classification has 13 entries with similar clues
- aboBlood classification system
- typeClassification
- octaneGasoline classification
- kingdomMajor category of biological classification
- x-ratedOld classification for adult films
- nosologyMedical science concerned with the classification of diseases
- taxonomyClassification of living organisms
- categoryClassification
- libellousDefamatory Aussie demand for classification possibly picked up
- phoneticsThe study and classification of speech sounds
- call-numberClassification of book in library
- systematicsClassification of living organisms
- isbn-international-standard-book-numberA number assigned to a newly published book in keeping with an international book classification system