Page History

edition

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Effective dates: 
-        7: 2000-2006 
-        6: 1995-1999 
-        5: 1990-1994 
-        4: 1985-1989 
-        3: 1980-1984 
-        2: 7/1974-1979 
-        1: 9/1969-6/1974

main-classification

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Format for all IPC is space-filled to 4-characters at main group: ANNA^^nn/n[...]. See XML example above.

further-classification

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Further/secondary classification. Same format as main-classification.

additional-info

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Additional information

linked-indexing-code-group

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Indexing codes are used in association with classification symbols to provide technical information. Their format is similar to classification symbols, but they employ a colon in place of the slash. For example: ANNAnnnn:n[...]. Linked indexing codes show which classification symbols the indexing code is associated with. See Review of the Hybrid Systems in the IPC for more information.

unlinked-indexing-code

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Unlinked indexing codes are similar to linked indexing codes, but are not linked to an associated classification symbol.

text

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Not populated