Projection (008/22-23 006/05-06) (Maps)
Codes
au Azimuthal, specific type unknown
bd Mercator
bh Transverse Mercator
cc Lambert's conformal conic
cp Polyconic
zz Other
Description/Instructions
The projection code is a two-character alphabetic code that indicates the projection used in producing the item. This information is also reflected in the 255 field, subfield $b, statement of projection.
DEFAULT CODE: ##
Code definitions
Specifically named projections are not described in this document. The presence of the name of the projection on the item identifies the appropriate code for 008/22-23. Cartographic reference sources may be consulted for a more detailed explanation of specific projections.
au Azimuthal, specific type unknown.
Use code "au" to indicate that only the projection type (azimuthal) is known, not the specific projection.
Use code "az" for an azimuthal projection for which none of the other codes are appropriate.
Use code "##" if no projection is specified on the item.
Use code "zz" for a projection for which none of the other defined codes are appropriate.
Related fields, etc.
008/22-23 006/05-06 (MARC 21 Format for Bibliographic Data)
See also:
Section E. MARC 21 Format for Serials as Applied Within CONSER