Geographical information systems for ... 1990: CIP t.p. (John C.H. Stillwell; School of Geog., Univ. of Leeds, U.K.) pref. (John Stillwell) data sheet (Stillwell, John Charles Harold; b. 04-27-52)

The spatial patterns of British migration in 1991 ... 1993: t.p. (John Stillwell; School of Geog., Univ. of Leeds)