BW

1. Botswana (IVR)
2. British Waterways (formerly British Waterways Board)

b/w or B/W

Black and white

• tricho-
• trichobacteria
• trichocyst
• trichocysts
• trichogyne
• trichogynes
• trichoid
• trichological
• trichologies
• trichologist
• trichologists
• trichology
• trichome
• trichomes
• trichomonad
• trichomonads
• trichomonal
• Trichomonas
• trichomoniases
• trichomoniasis
• trichophyton
• trichophytons
• trichophytoses
• trichophytosis
• Trichoptera