Reference: This list is the product of source types used in numerous inventories. Sources: EEA-CDS, UNEP-HEM and CORDIS.
The list can be developed by using specific standards (FGDC for geographical databases, WWW for internet documents). Several source types can be used (field repetition). For example:
Here are some types of objects being able to be used in a standard manner (ref.: EEA, 1994):
Main categories (highly recommended utilisation):
Secondary categories (utilisation recommended in addition to the main category, the code being that of the AEE, it is necessary to specify Scheme=AEE if one uses this code. One can, on the other hand, use the proposed English terms.)
PU public (or public power dominant in the managing board)
PR private (not specified)
AS Private association/foundation
NA private non associate
IN Industrial, commercial (other than consultants)
RC research centres, universities, academic institutions.
GO governmental or public subnational institutions
NG Non governmental organisation (NGO)
PO political responsibles
ME media, e.g. press
A more complete codification or designation in English of other types of sources can be inspired from what is proposed for the field FORM, CONTENT. Another alternative is to use the codification or designations of US-MARC which is also very detailed on this subject.