Warfare & defence 429
Western philosophy, from c 1900 - 236
Welfare economics 176
Water supply & treatment 148
Western philosophy: Ancient, to c 500 146
WAP (wireless) technology 69
Western philosophy: Medieval & Renaissance, c 500 to c 1600 69
Western philosophy: c 1600 to c 1900 67
War crimes 57
Waste management 51
Working patterns & practices 39
Western "classical" music 36
Writing & editing guides 28
Waste treatment & disposal 27
Welfare & benefit systems 25
Writing systems, alphabets 25
Wildlife: general interest 22
Wave mechanics (vibration & acoustics) 16
Women's health 14
Western Continental Europe 12
War & defence operations 11
Western philosophy: Enlightenment 11
Wildlife: aquatic creatures 10
Weapons & equipment 9
Witchcraft 6
Walking, hiking, trekking 5
World atlases / world maps 5
Weather 4
Wildlife: butterflies, other insects & spiders 4
Winemaking technology 4
World music 4
Writing skills 4
WAP networking & applications 3
Water industries 3
Web services 3
War & combat fiction 2
Water purification & desalinization 2
Web programming 2
West Germany 2
Western Australia 2
Wetlands, swamps, fens 2
Wildlife: birds & birdwatching 2
Wildlife: mammals 2
Wills & probate / Succession 2
Wiltshire 2
Wind instruments 2
Wines 2
Worship, rites & ceremonies 2
WMQL 1
WS 1
WSDF 1
Water sports & recreations 1
Web graphics & design 1
West Africa 1