00843nam0 2200277 450 00002445420090316100402.00444110542072040408820090316d1975----km-y0itay50------baengNLy-------001yyIncome differencesrecent researchJan TinbergenAmsterdamNorth-Hollandc1975New YorkAmerican ElsevierXIII, 73 p.20 cmProfessor Dr. F. De Vries lectures2001Professor Dr. F. De Vries lecturesIncome differences45271RedditoTinbergen,Jan26011ITUNIPARTHENOPE20090316RICAUNIMARC000024454124/65388NAVA22009Income differences45271UNIPARTHENOPE