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OCLC Support

Material Type names and codes

View the values and other criteria indexed for each category set of codes in the Material Type index.

These values are used when performing a command-line search in Connexion or an expert search in FirstSearch, WorldShare, or WorldCat Discovery. Limit a search by the material type search index by entering the index label and a colon (mt:) followed by the material type code — for example, ti:gift deer and au:hoover and mt:bks.

 Note: The Boolean operator should be capitalized in WorldShare and WorldCat Discovery — for example, ti:gift deer AND au:hoover AND mt:bks.

Here is how the tables are organized:

  • Columns in the tables show values or criteria indexed based on either:
    • The Leader, 007, 008, and Other criteria
    • The 006 fields
  • Each row shows separate sets of values indexed for each material type, having up to six possible sets of values.
  • Values shown are in byte position 0 (first position), or if values are in another byte position, the position is shown following a slash:
    • Example: 008/23=s (the value s is in byte 23 of the 008)

For element labels, see Bibliographic Formats and Standards or OCLC-MARC Records.