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Publication Information. Sources for the micropublisher, distributor, and/or manufacturer are generally the microform title frame, container, the micropublisher's accompanying printed sales information, or the micropublisher’s web site. Sources from outside of the resource itself must be bracketed. If no information is available, input [Place of publication not identified] : $b [Publisher not identified] in the appropriate 264 field.
Physical description (Extent, Content, Media & Carrier Type). Following the extent, always provide the “content type” (RDA 6.9; field 336), “media type” (RDA 3.2; field 337), and “carrier type” (repeating the same term used in 300, this time in singular form) (RDA 3.3; field 338).
300 ## $a microfilm reels
300 ## $a 8 microfilm reels
300 ## $a 20 microfilm reels : $b color illustrations
300 ## $a 105 microfiches
300 ## $a 8 microfilm reels $c 35 mm
The content, media, and carrier types for microfilm and microfiche are as follows:
Microfilm:
336 ## $a text $b txt $2 rdacontent
337 ## $a microform $b h $2 rdamedia
338 ## $a microfilm reel $b hd $2 rdacarrier
Microfiche:
336 ## $a text $b txt $2 rdacontent
337 ## $a microform $b h $2 rdamedia
338 ## $a microfiche $b he $2 rdacarrier