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2-- LOCATION AND ACCESS BLOCK
==Definition and Scope of Fields==
This block contains the information needed to identify the institution, physical site or collection at
which a bibliographic unit is located or from which it may be available.
The following fields are defined:
*252 Location and Call Number
*255 Past Location and Call Number
*256 Electronic Location and Access
==Occurrence==
A holdings record must contain a field 252 or a field 256 to identify the physical site location that
consists of a combination of an institution identifier and identifiers of one or many of its sub
locations.
Others fields of 2-- block may be used if necessary.
== Див. також ==