PRODUCTION MASTER
Appearance
A · B · C · D · E · F · G · H · I · J · K · L · M · N · O · P · Q · R · S · T · U · V · W · X · Y · Z
Definitions
all LRH original (called masters) tape recordings are to be safeguarded and are not to be used or played except to make a production master from which other copies for use can be made. (FO 1655)