000 00303nam a2200109Ia 4500
008 201216s9999 xx 000 0 und d
100 _aMuczyk, Jan P. [et al.]
245 0 _aPrinciples of supervision:first & second level management
260 _aColumbus
_bCharles E. Merril
300 _a509
942 _cBK
999 _c6726
_d6726