000 00347nam a2200145Ia 4500
001 19919
008 230419s9999 xx 000 0 und d
100 _aMarson, Stuart
245 0 _aProblem Solving with Maps
260 _aU.S.A.
260 _bPress Syndicate of the Cambridge University Press
260 _c1992
300 _a48
942 _cBK
999 _c12085
_d12085