Detail

notation
m
English
Published

Other Properties

English preferred label microgroove/fine Published
English notation m Published
English definition Microgroove disc or a fine cylinder. Published
English scope note Discs issued at 16, 33 1/3, and 45 rpm are usually issued as microgroove. Cylinders issued at 160 rpm (which have 200 grooves per inch) are usually issued as fine. Published