classification
| Subheading | classification |
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| Record Type | Q |
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| Entry Version | CLASS |
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| Abbreviation | CL |
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| Scope Note | Used for taxonomic or other systematic or hierarchical classification systems. |
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| Annotation | subhead only; includes "taxonomy", "systematics", "hierarchies"; indexing policy: Manual 19.8.16; DF: /class or /CL |
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| Online Note | search policy: Online Manual; use: main heading/CL or CL (SH) or SUBS APPLY CL |
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| History Note | 66; used with Category B 1966; B-I 1967; B-I & N 1968-74; B-N 1975-79; A11 & B-N 1980-89; B-E, F2-4, G1-2, G12, I, J, M & N2-4 1990 forward |
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| Entry Term | hierarchies |
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| Entry Term | hierarchy |
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| Entry Term | systematics |
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| Entry Term | taxonomy |
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| Date of Entry | 19731227 |
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| Revision Date | 20030724 |
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| Date Established | 19660101 |
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| Unique ID | Q000145 |
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