00306nam a2200121Ia 4500008004100000082001500041100001700056245002000073260005400093300001300147942000700160999001700167190709s9999    xx            000 0 und d  a513.83 SZ2  aHu, Sze-Tsen 0aHomotopy Theory  aNew yorkb& london       Academic press Incc1959  axiii,347  cBK  c40532d40532