⮚Content Type (336)
A categorization reflecting the fundamental form of communication in which the content is expressed and the human sense through which it is intended to be perceived.
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336 ## $a still images $b sti $2 rdacontent
⮚Media Type (337)
The media type is the device required to use the resource. As with content type, RDA provides a controlled list of terms to use, as found in RDA 3.2.1.3. Of the terms given, “computer,” “microform,” and “unmediated” are likely the terms you will be using. The term “unmediated” is used for printed textual resources since no device is required to use such a resource.
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337 ## $a microform $b h $2 rdamedia
⮚Carrier Type (338)
The carrier type is an RDA core element with instructions given in RDA 3.3. The carrier type reflects the format of the storage medium and housing of the resource. RDA provides a controlled list of terms. Only $a (the term) and $2 (term source) are required. (Princeton practice is the use subfield $b in addition to $a and $2).
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