First Indicator Undefined #  Undefined 
Second Indicator Undefined #  Undefined 
Subfield Codes 

$a  Rule number (NR) $i  Explanatory text (R) 
$6  Linkage (NR) $8  Field link and sequence number (R) 
Identification of a rule number that is used to build a number by applying a table. Each unique rule number may be translated into a sequence of steps used by a system to calculate the number in classification schemes that have multiple rules for building specific classification numbers.
153  ##$zKFAKFZ$a1$c599.5$jUnited States  States and Territories  
764  ##$a2$iSubtract 1 from number in 153/a and add table number to resulting number 
153  ##$zH3$a1$c295$jTables of geographical divisions  
764  ##$a1$iAdd table number to number in 153/a or to number specified in 761/b if present 
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