# First try to map leader bytes 6+7 combined, then if nothing # try to map just leader byte 6.

# first some mappings from leader bytes 6 and 7 combined:

'aa': Book 'ab': Journal/Newspaper 'am': Book 'as': Journal/Newspaper 'ta': Book 'tm': Book

# Now some from just byte 6 'c': Musical Score 'd': Musical Score 'e': Map/Globe 'f': Map/Globe 'i': Non-musical Recording 'j': Musical Recording 'k': Image 'm': Software/Data 'g': Video/Film