000 00249nam a2200109Ia 4500
008 180612s9999||||xx |||||||||||||| ||und||
041 _aen
100 _aHecht lajac
245 0 _aOPLECS
260 _alondon
_bAddison wesley pub co
_c1980
942 _cPR
999 _c39607
_d39607