1LIPTON, MICHAEL.Why poor people stay poor: urban bias in world development[M].Maurice T.Smith, London, 1977.
2CORBREIDGE S.Urban bias, rural bias and industrialization:an ap2pralsal of the works of michael lipton and terry byres[A].In HARRISSJ, eds.Rural Development:Theories of Peasant Economy and Agrarian Change[C]. Hutchinston, London, 1982:94-116.