Which MARC21 fields Identify the Bibliographic Material Type?

How is the "Material Type" for a title search defined? Which bibliographic information determines these facets:

Books (BK)

Journals (CR)

Computer files (CF)

Maps (MP)

Music (MU) Visual materials (VM) Mixed materials (MX)

These material types are identified from the bibliographic LDR position 6, 7 and 007 position 00.

For example, LDR Position 6 = a, Position 7 = a or c or d or m, the Alma Bibliographic Material is "BK", and Alma Material Type Term is "Book".

For complete and exact information, please see the Online Help, link provided below.

For exact and latest information, please consult "Material Types in Search Results".