Book reviews : White Man's Country: Racism in British Politics Robert Miles and Annie Phizacklea Pluto Press, London, 1984, £4.95 pbk Passage to Britain: Immigration in British History and Politics James Walvin Penguin, London, 1984 Staying Power: The History of Black People in Britain Peter Fryer Pluto Press, London, 1984, £9.95 pbk, £17.50 hbk