000 00332nam a2200121Ia 4500
008 161118s2016 xx 000 0 und d
082 _a526.9 RIT-M
100 _aRitchies, W.
245 0 _aMapping for field scientists :a problem -solving approch.
260 _aNewton Abbort
_bDavid &Charles
_c1977
300 _a327p
942 _2ddc
999 _c11418
_d11418