Map series. A map series is a number of related but physically separate and bibliographically distinct cartographic units intended by the producers or issuing bodies to form a single group. Do not use for atlas series.
c
Map serial. A map serial is a publication issued in successive parts bearing numerical or chronological designations and intended to be continued indefinitely. If you use code c, you must use code s in BLvl.
d
Globe
e
Atlas. An atlas, including atlas series and serially issued atlases.
f
Separate supplement to another work. The cartographic item or material is a supplement to another work. The other work does not have to be cartographic material.
g
Bound as part of another work. The cartographic item or material has been bound as part of another work. The other work does not have to be cartographic material.
u
Unknown. The type of cartographic material is not known.
z
Other. The cartographic material cannot be defined by any other code.