General Description 1.5D1

Revise examples to read:

1 wall chart : coloured ; 24 x 48 cm

321 pages : illustrations (some colour); 23 cm

6 microform reels ; 35 mm

1 CD : digital, stereophonic ; 4 ¾ in.

or

1 sound disc : digital, stereophonic ; 4 ¾ in.

2 sound discs (1 hr., 15 min.) : analog, 33 1/3 rpm, stereophonic ; 10-12 in.

[Abbreviating inches and minutes are exceptions to RDA 's spelling out of abbreviations.]

Add examples:

45 pages : illustrations (colour) ; 23 cm

50 pages : illustrations (chiefly colour) ; 28 cm