Magnetic tape sound recording and reproducing systems. Part 3: Methods of measuring the characteristics of recording and reproducing equipment for sound on magnetic tape
Includes the text of amendments 1 and 2. The text of amendment 2 can be distinguished by a vertical line in the margin and relates to clause 12.2.1, to clause 12.3.1 on page 39, to clause 12.3.3 on page 43 and to clause 12.4.1 on page 47.