RFC 4289:Multipurpose Internet Mail Extensions (MI...
RFC-Ref

8 - A - B - C - D - E - F - G - H - I - L - M - N - O - P - Q - R - S - T - U - V - W

content type

Click on the red underlined text to get to the source

2. External Body Access Types
... access type MUST have a unique name. This name appears in the access-type parameter in the message/external-body content-type header field and MUST conform to MIME content ...

8 - A - B - C - D - E - F - G - H - I - L - M - N - O - P - Q - R - S - T - U - V - W

Google
Web
RFC-Ref
RFC-Ref.org
Frontpage
Global Index
RFC
Sister Sites
Chess-Ref.org
Law-Ref.org
InChI.info
Zvon.org