00345nam a2200109Ia 4500008004100000082001600041100002200057245005200079260003600131300002900167440003900196260908b        |||||||| |||| 00| 0 eng d  a516bZ67.FG  aZieschang, Heiner  aFinite groups of mapping classes of surfacesb/  aBerlin:bSpringer-Verlag,c1981  aviii, 340p. Index. Bibl.  aLecture notes in Mathematics ; 875