00385nam a22001217a 4500999001700000082001200017100001900029245003900048260002800087300002500115942002100140952010200161  c10526d10526  a530 THO  aThornley, G.C.  aChanging horizons /cG.C. Thornley  a	London : Longman, 1975  a174 p. : il. ; 20 cm  cStack text books  00104070840/4aAIISHbAIISHd2020-05-15l0o530 THOp275r2020-05-15 00:00:00w2020-05-15ySTS