3xx

300 (Physical Description)

Required

Repeatable: Y

Instructions:

Avoid detailed information, especially numbers. Preferred terminology for subfield a: 1 online resource. Subfield b is optional.

‡a Extent

Example:

300 // ‡a 1 online resource

300 // ‡a 1 online resource : ‡b illustrations, maps

336 (Content Type)

Required

Repeatable: Y

Instructions:

Varies according to type of resource (images, text, music, sound, streaming video, etc.). Use in conjunction with 006 Leader.

Focus on primary content and include other content types as needed.

‡a content type ‡b content type code ‡2 rdacontent

Example:

For a list of all terms and codes, see: https://www.loc.gov/standards/valuelist/rdacontent.html

For a website with primarily textual content, use:

336 // ‡a text ‡b txt ‡2 rdacontent

Substitute or add other terms as appropriate:

336 // ‡a cartographic image ‡b cri ‡2 rdacontent

336 // ‡a computer dataset ‡b cod ‡2 rdacontent

336 // ‡a notated music ‡b ntm ‡2 rdacontent

336 // ‡a performed music ‡b prm ‡2 rdacontent

336 // ‡a sounds ‡b snd ‡2 rdacontent

336 // ‡a spoken word ‡b snd ‡2 rdacontent

336 // ‡a still image ‡b sti ‡2 rdacontent

336 // ‡a three-dimensional form ‡b tdf ‡2 rdacontent

336 // ‡a two-dimensional moving image ‡b tdi ‡2 rdacontent

337 (Media Type)

Required

Repeatable: Y

Instructions:

Use the terms listed in the example below; optionally add additional terms.

‡a media type ‡b media type code ‡2 rdamedia

Example:

337 // ‡a computer ‡b c ‡2 rdamedia

338 (Carrier Type)

Required

Repeatable: Y

Instructions:

Use the terms listed in the example below; optionally add additional terms.

‡a carrier type ‡b carrier type code ‡2 rdacarrier

Example:

338 // ‡a online resource ‡b cr ‡2 rdacarrier

362 (Dates of Publication)

Optional

Repeatable: Y, only to record formatted and unformatted information

Instructions:

If this field is used, it should match the dates in the 008.