Classification
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364 - Criminology
1
379 - Public policy issues in education
1
519 - Probabilities & applied mathematics
1
581 - Specific topics in natural history
1
615 - Pharmacology & therapeutics
1
620 - Engineering & allied operations
1
621 - Applied physics
1
624 - Civil engineering
1
686 - Printing & related activities
1
710 - Civic & landscape art
1
972 - Middle America; Mexico
1