bis. Bissextile.

bk. Book; Bank; Bark.

bkg. Banking.

bkt. Basket.

B.L. Bachelor of Laws.

bl. Barrel; Bale.

b.l. Bill of lading.

bldg. Building.

B.M. Bachelor of Medicine; Beatæ Memoriæ=Of blessed memory; British Museum.

B.Mus. Bachelor of Music.