en
615
Pharmacology and therapeutics
615.5
Therapeutics
615.5019
Psychological principles
615.5071
Education
615.5072
Research
615.5083
Young people
615.5084
People in specific stages of adulthood
615.5092
Therapists
615.53
General therapeutic systems
615.54
Pediatric and geriatric therapeutics
615.58
Drug therapy
Dewey Decimal Classification
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