Continuing 12.5D1

Revise examples to read:

23 volumes : illustrations ; 25 cm

filmstrips : colour ; 35 mm

16 film cassettes : sound, colour ; standard 8 mm

1 volume (loose-leaf) ; 28 cm

CDs ; 4 ^3/4 in.

[RDA has all measurements in metric, but allows for other units; LC retains inches for discs, but allows metric for everything else.]