TY - BOOK ID - 132097559 TI - A thesaurus-classification for the physical forms of non-book media PY - 1970 SN - 0950121207 PB - London Coburgh DB - UniCat KW - Subject indexing KW - Audiovisual methods UR - https://www.unicat.be/uniCat?func=search&query=sysid:132097559 AB - ER -