资 源 简 介
PSP file stores informations about scanned files to be stored in National Library Prague.
Informations about format of the file are:
http://www.ndk.cz/digitalizace/vystavena-nova-verze-definice-metadat-pro-periodika-a-monografie
Documentation in Czech is:
https://psp-validator.readthedocs.org/en/latest/
