This field provides information for electronic access to the material.
First Indicator: Access method
(No information provided)
0 (Email)
1 (FTP)
2 (Remote login (Telnet))
3 (Dial-up)
4 (HTTP)
7 (Method specified in subfield $2)
Second Indicator: Relationship
(No information provided)
0 (Resource)
1 (Version of resource)
2 (Related resource)
3 (Component part(s) of resource)
4 (Version of component part(s) of resource)
8 (No display constant generated)
Common Subfields: $a Host name
$u Uniform resource identifier
$2 Access method
$u Uniform resource identifier
Uniform resource locator
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