Acs, Zoltan J; Audretsch, D.B Has the role of small firms changed in the United States? - Wissenschaftszentrum, Berlin 1991 - 36 See WZ 330 ACS (Includes Acc. Nos. 32273, 32274 ,32275 & 32276) ISBN: FS IV 91 - 13 Subjects--Topical Terms: ECONOMICS