From the Knit Rowan website:
Knit this womens Fairisle sweater from Rowan Knitting and Crochet Magazine 56, a design by Marie Wallin using the beautifully soft, traditionally spun Rowan Fine Tweed (Wool) knitted in the round with fairisle yoke pattern. This knitting pattern is for the experienced knitter.

Finished chest width dimensions:
48: 54: 60: 66: 72 cm
19: 21½: 23½: 26: 28½ inches

Yarn Information:
A - Settle 374
12, 14, 15, 16, 18 skeins
1176, 1372, 1470, 1568, 1764 yards

B - Bedale 361
4, 5, 5, 6, 6 skeins
392, 490, 490, 588, 588 yards