Character position definition and scope:

These character positions contain a number specifying the reduction ratio for a microform.  A one-character alphabetic code indicating the reduction ratio range is recorded in 007/05.

Record requirements for National-level and Minimal-level records:  Optional.

Guidelines for applying content designators:

Generally, the specific reduction ratio is recorded when it is ultra high (code e in 007/05).  If the ratio is not ultra high, recording the specific ratio is less essential.

The numeric value of the reduction ratio, using three digits, is right justified with leading zeros (e.g., 015, 048).  A hyphen ( - ) is used for unknown digits in the reduction ratio (e.g., 03-, 1--, or - - -).

Three fill characters ( ||| ) are used when no attempt has been made to code this data element.


Related MARC field or document:

07/05 Microform:  Reduction ratio range

To return, select:

007:  Microform

007  Physical Description Fixed Field