005430000a22001690004500 32944 0-297-79557-0 32950 32944 LIVR 20130715 frey50 eng Workbook for the seventh edition of an introduction to positive economics LIVR David FORREST Richard G. LIPSEY LONDON ENGLISH LANGUAGE BOOK SOCIETY 1989 313p. 25cm. ECONOMIE MICRO-ECONOMIE MANUEL FORREST David LIPSEY Richard G. 2022-04-22 39677 BENA BENA Magasin HBG51 HBG51 0