00307nam a2200109Ia 4500008004100000041000800041082001700049100002200066245006200088260003900150300000800189211209s1998    xx            000 0 und d  aeng  a382.1042 POR  aPORTER, MICHAEL E  aCOMPETITIVE ADVANTAGE OF NATIONS WITH A NEW INTRODUCTION   aLONDONbMACMILLAN PRESS LTD.c1998  a855